To solve this problem, we first have to find our unknowns. Our unknowns are how many meerkats there are total (T) and how many meerkats are left in the burrow (L).

$\displaystyle T=5*7$ because there are $\displaystyle 5$ families of meerkats and each of them has $\displaystyle 7$ members of the family. Each is a keyword for multiplication so that gives us a hint.

$\displaystyle T=35$

$\displaystyle L=35-4$ because there are $\displaystyle 35$ meerkats total in the burrows and $\displaystyle 4$ meerkats are subtracted because they left the burrow.

$\displaystyle L=31$

There are $\displaystyle 31$ meerkats left in the burrows.

To solve this problem, we first have to find our unknowns. Our unknowns are how many baseball cards Patrick received in total (T) and how many cards each child will receive (C).

$\displaystyle T=40+20$ because he received $\displaystyle 40$ cards from his friend and then another $\displaystyle 20$ from his uncle. The cards would be added together to find the total.

$\displaystyle T=60$

$\displaystyle C=60$÷$\displaystyle 3$ because there are $\displaystyle 60$ cards total and they are being shared equally among Patrick AND his two brothers so there are $\displaystyle 3$ children total. "Shared equally" is a keyword for division.

$\displaystyle C=20$

Each child will receive $\displaystyle 20$ cards in total.

To solve this problem, we first have to find our unknowns. Our unknowns are how much did it snow during the weekdays (W) and how much did it snow on Saturday (S).

$\displaystyle W=5+6+3+1$ because we need to know how much it snowed during the weekdays in total. We must add together the amount of snow from Monday, Tuesday, Thursday, and Friday.

$\displaystyle W=15$

$\displaystyle S=15*3$ because it snowed $\displaystyle 3$ times as much on Saturday as it did the rest of the week. The total snow from the weekdays will be multiplied by $\displaystyle 3$ to find out how much it snowed on Saturday.

$\displaystyle S=45$

On Saturday it snowed a total of $\displaystyle 45$ inches.

$\displaystyle 2$ is added to each X value to get the Y value. 

$\displaystyle 1+2=3$

$\displaystyle 2+2=4$

$\displaystyle 3+2=5$

$\displaystyle 4+2=6$

To find the rule, you may have to do some trial and error. The most important thing to remember is, once you think you have the rule, make sure to test the rule with all of the X values. 

$\displaystyle 18$ is added to each X value to get the Y value. 

$\displaystyle 3+18=21$

$\displaystyle 5+18=23$

$\displaystyle 7+18=25$

$\displaystyle 9+18=27$

To find the rule, you may have to do some trial and error. The most important thing to remember is, once you think you have the rule, make sure to test the rule with all of the X values. 

$\displaystyle 20$ is added to each X value to get the Y value. 

$\displaystyle 29+20=49$

$\displaystyle 35+20=55$

$\displaystyle 41+20=61$

$\displaystyle 53+20=73$

To find the rule, you may have to do some trial and error. The most important thing to remember is, once you think you have the rule, make sure to test the rule with all of the X values. 

$\displaystyle 7$ is added to each X value to get the Y value. 

$\displaystyle 62+7=69$

$\displaystyle 75+7=82$

$\displaystyle 87+7=94$

$\displaystyle 94+7=101$

To find the rule, you may have to do some trial and error. The most important thing to remember is, once you think you have the rule, make sure to test the rule with all of the X values. 

$\displaystyle 4$ is added to each X value to get the Y value. 

$\displaystyle 14+4=18$

$\displaystyle 17+4=21$

$\displaystyle 20+4=24$

$\displaystyle 36+4=40$

To find the rule, you may have to do some trial and error. The most important thing to remember is, once you think you have the rule, make sure to test the rule with all of the X values. 

$\displaystyle 5$ is added to each X value to get the Y value. 

$\displaystyle 1+5=6$

$\displaystyle 2+5=7$

$\displaystyle 3+5=8$

$\displaystyle 4+5=9$

To find the rule, you may have to do some trial and error. The most important thing to remember is, once you think you have the rule, make sure to test the rule with all of the X values. 

Each X value is multiplied by $\displaystyle 4$ to get the Y value. 

$\displaystyle 2\times4=8$

$\displaystyle 4\times4=16$

$\displaystyle 6\times4=24$

$\displaystyle 8\times4=32$

To find the rule, you may have to do some trial and error. The most important thing to remember is, once you think you have the rule, make sure to test the rule with all of the X values.