Question

Eric's savings can be modeled by the regression equation

y= 8x² +100x+ 250. Which of the following is the best prediction for the
amount he will have saved after 20 months?
a) $18,450

b) $22,250

c) $27,650

d) $32,850

Answer 1

To predict the amount Eric will have saved after 20 months, substitute x=20 into the regression equation y = 8x^2 + 100x + 250.

Step-by-step explanation:

To predict the amount Eric will have saved after 20 months, we can plug in the value of x=20 into the regression equation y = 8x^2 + 100x + 250.

Substituting x=20:

y = 8(20)^2 + 100(20) + 250

y = 8(400) + 100(20) + 250

y = 3200 + 2000 + 250

y = 5450

Therefore, Eric will have saved $5,450 after 20 months.