Gina takes classes at both westside community college and pinewood community college. at westside, class fees are
$
98
per credit hour, and at pinewood, class fees are
$
115
per credit hour. gina is taking a combined total of
13
credit hours at the two schools.

suppose that she is taking
w
credit hours at westside. write an expression for the combined total dollar amount she paid for her class fees.

The area (a) of a circle with a radius of r is given by the formula and its diameter (d) is given by d=2r. arrange the equations in the correct sequence to rewrite the formula for diameter in terms of the area of the circle.

Which of the following represents a function? 50 !

Aconcession manager at yankee stadium wants to know how temperature affects beer sales. she took a sample of 10 games and recorded the number of beers sold and the temperature in the middle of the game. temperature 80 68 78 79 87 74 86 92 77 84 number of beers 20533 1439 13829 21286 30985 17187 30240 87596 9610 28742 a. draw a scatter plot of the data. b. the manager estimates the regression equation to be: numberofbeers = −100, 678 + 1, 513 ∗ temperature draw this on your scatter plot. c. for one of the estimated points, indicate the residual with ei . d. for that same point, indicate what part of the variation is explained by the model with ˆyi − y¯.