∑y = 120 ∑ x = 1,280 ∑ x2 = 165,200 ∑ xy = 15460 Where y is measured in millions of dollars and x in cents. Estimate the linear regression equation of sales revenues on gasoline price.

Afunction is given: f(x)=3x+12 a. determine the inverse of this function and name it g(x) b. use composite functions to show that these functions are inverses. c. f(g(– explain: what is the domain?

Which of the following represents the range of the graph of f(x) below

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.