Slope and rate of change on card 7 an 8

Card 7

The hourly rate of change/slope is $75 per hour.

Card 8

Frastastic is charging $0.48 per ounce.

Step-by-step explanation:

Card 7

Lets take the set up fee as "$" and,

Hourly rate as $per hour.

Now we can write equations for 3 hour event and 5 hour event.

<------- (1)

<------- (2)

Now we need to solve the simultaneous equations to find and .

Subtract (1) from (2)

⇒

So the hourly rate of change/slope is $75 per hour.

Therefore, Raymond is right.

Card 8

You can take Amount (oz) as x values and Cost as y values and plot a graph.

Then the Slope of the graph will give you the rate Frastastic is charging per yogurt.

Slope of a linear graph is given by the following equation;

Slope(m)=

Slope(m)=

Slope(m)=

Slope(m)=

Therefore, Frastastic is charging $0.48 per ounce.

This is less than $0.50 per ounce charged by Fromazing. Therefore, Sterling is right.

17

step-by-step explanation:

51/3=17

thus 17 is your answer.

answer: the center is the median and/or mean of the data. the spread is the range of the data. and, the shape describes the type of graph. the four ways to describe shape are whether it is symmetric, how many peaks it has, if it is skewed to the left or right, and whether it is uniform. good luck

step-by-step explanation: