SAT Math : Expressions
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Example Questions
Example Question #2567 : Sat Mathematics
If 
To solve this problem we use the logarithm rule
Example Question #102 : Expressions
If both 
Example Question #7 : How To Simplify Expressions
Which of the following does not simplify to 
All of these simplify to
5x – (6x – 2x) = 5x – (4x) = x
(x – 1)(x + 2) - x2 + 2 = x2 + x – 2 – x2 + 2 = x
x(4x)/(4x) = x
(3 – 3)x = 0x = 0
Example Question #101 : Expressions
Edward is 
Let f = Francine's age now.
e = f – 5
f = e + 5
In 2 years, Francine will be f + 2. Use our previous calculation to substitute.
f + 2 = (e + 5) + 2 = e + 7
Example Question #1 : Simplifying Expressions
a # b = (a * b) + a
What is 3 # (4 # 1)?
8
27
15
20
12
27
Work from the "inside" outward. Therefore, first solve 4 # 1 by replacing a with 4 and b with 1:
4 # 1 = (4 * 1) + 4 = 4 + 4 = 8
That means: 3 # (4 # 1) = 3 # 8. Solve this now:
3 # 8 = (3 * 8) + 3 = 24 + 3 = 27
Example Question #121 : Expressions
Simplify the result of the following steps, to be completed in order:
1. Add 7x to 3y
2. Multiply the sum by 4
3. Add x to the product
4. Subtract x – y from the sum
28x – 13y
28x + 11y
28x + 13y
28x + 12y
29x + 13y
28x + 13y
Step 1: 7x + 3y
Step 2: 4 * (7x + 3y) = 28x + 12y
Step 3: 28x + 12y + x = 29x + 12y
Step 4: 29x + 12y – (x – y) = 29x + 12y – x + y = 28x + 13y
Example Question #1 : How To Simplify An Expression
Which is the greater quantity: the median of 5 positive sequential integers or the mean of 5 positive sequential integers?
The relationship cannot be determined
The median is greater
The quantities are equal
The mean is greater
The quantities are equal
If the first integer is 
This is the same as the median.
Example Question #121 : Expressions
You are told that 
Determine whether the absolute value of 
The relationship cannot be determined from the information given.
The quantities are equal
The expression is simplified as follows:
Since 
Example Question #791 : Algebra
Which best describes the relationship between 
The relationship cannot be determined from the information given.
The relationship cannot be determined from the information given.
Use substitution to determine the relationship.
For example, we could plug in 
So far it looks like the first expression is greater, but it's a good idea to try other values of x and y to be sure. This time, we'll try some negative values, say, 
This time the first quantity is smaller. Therefore the relationship cannot be determined from the information given.
Example Question #3 : How To Simplify An Expression
If 
Cannot be determined
We have three variables and only two equations, so we will not be able to solve for each independent variable. We need to think of another solution.
Notice what happens if we line up the two equations and add them together.
(x + y) + (3x – y + z) = 4x + z
and 5 + 3 = 8
Lets take this equation and multiply the whole thing by 3:
3(4x + z = 8)
Thus, 12x + 3z = 24.
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