Sal recorded the cost of his monthly home heating bill and the corresponding average monthly temperature for the past 15 months. He displayed the information in a scatter
plot and used a graphing calculator program to find the least squares regression line
to fit the dat
Sal wants to use the least squares regression line to predict the cost of his heating bill
when the average monthly temperature is 40°F. Which statement is true?

b

step-by-step explanation:

the total is 23.97. 0.25% is off so you have to subtracting 25% from 100% and you will get 75% if you convert it to decimal you will get 0.75. you have to find the original because the formula is % times original = total.so you have the total and the % so you just have to plug it in.

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3