PLEASE HELP!


1. Ariel travels 400 miles in 8 hours. What is her rate of change or speed?

Enter your answer in the box:


2.Which linear equation is the BEST representation of the line of best fit for the scatter-plot?

A) y = 3

B) x = 3

C) y = -3

D) x = -3



3. Which linear equation BEST represents the line of best fit for the scatter-plot? A) y = 1 3 x - 1

B) y = -1 3 x + 1

C) y = 3x + 1

D) y = 3x - 1 4)


4. Which of the choices is NOT a good example of a line of best fit?

A)

B)

C)

D)


The cost of tuition at Johnson Community College is $160 per credit hour. Each student also has to pay $50 in fees. Model the cost, C, for x credit hours taken. A) C(x) = 50x

B) C(x) = 160x

C) C(x) = 110x

D) C(x) = 160x + 50