Write the interpolation formula.

Identify and substitute the values.

Simplify the fraction.

The answer is:  

Find the pattern of the sequence:

This pattern is  so the next number in the sequence would be 

Find the pattern in this sequence of numbers:

In this case, the pattern is adding 13n to the previous number where n= how many numbers came before the current number.

so the first number we are looking for would be:

the second number we are looking for would be:

To extrapolate the results of the study out to 53 minutes, first we have to determine an equation representing the relationship between time passed and amount of water; we can write our equation in slope-intercept form:

Where our y-axis represents amount of water and the x-axis represents time. We can pick 2 points and label them Point 1 and Point 2; looking back at the table:

We label Point 1 as  and Point 2 as ; we plug these points into the slope formula as follows:

So, the slope of our line that describes how much water is in the boat is ; to find our  term, the y-intercept, we need to pick a point on the graph and plug in our slope to solve for y-intercept. Let's once again choose the point :

Simplify the expression and we find that b=0, so our slope-intercept equation is:

Plugging in a value of 53 for , we find that:

So the answer is 42.4 gallons of water in the boat after 53 minutes.

The vertical line test can be used to determine if an equation is a function. In order to be a function, there must only be one  (or ) value for each value of . The vertical line test determines how many  (or ) values are present for each value of . If a single vertical line passes through the graph of an equation more than once, it is not a function. If it passes through exactly once or not at all, then the equation is a function.

The horizontal line test can be used to determine if a function is one-to-one, that is, if only one  value exists for each  (or ) value. Calculating zeroes, domain, and range can be useful for graphing an equation, but they do not tell if it is a function.

Example of a function:

Example of an equation that is not a function:

A function may only have one y-value for each x-value.

The vertical line test can be used to identify the function. If at any point on the graph, a straight vertical line intersects the curve at more than one point, the curve is not a function.

As is clear from the graph, in the interval between  ( included) to , the  is constant at  and then from ( not included) to  ( not included), the  is a decreasing function.

Perpendicular lines have slopes that are negative reciprocals.  This is the case with these two lines.  Although these lines interesect, this is not the most appropriate answer since it does not account for the fact that they are perpendicular.

To find the slope of an equation first get the equation in slope intercept form.

where,

 represents the slope.

Thus

When determining how a the graph of a function will be translated, we know that anything that happens to x in the function will impact the graph horizontally, opposite of what is expressed in the function, whereas anything that is outside the function will impact the graph vertically the same as it is in the function notation. 

For this graph: 

The graph will move 3 spaces left, because that is the opposite sign of the what is connected to x directly. 

Also, the graph will move down 2 spaces, because that is what is outside the function and the 2 is negative.