The manufacturer of a computer is offering two discounts on last years model computer. The first discount is a $200 rebate and the second discount is 20% off the regular price, p. (a) Write a function f that represents the sale price if only the rebate applies. (b) Write a function g that represents the sale price if only the 20% discount applies. (c) Find and . What does each of these functions represent? Which combination of discounts represents a better deal for the consumer? Why?

Study Guide Solutions – Baugh – Exam 2 For the discrete probability distribution shown: x 5 10 20 40 L1 25% 12% 15% 48% L2 P(X=x ) *Create Lists by pressing STAT then Edit #1* (a.) Find the mean () Sum(L1 * L2) = 24.650 *To calculate Sum, press 2dSTAT, go to MATH, and Sum is #5. To insert L1, press1 and to insert L2, press 2. * Or by hand: (5 * .25) + (10 * .12) + (20 * .15) + (40 * .48) = 24.65 2 2 Find the variance ( ) Sum(L1 * L2) = 846.250 then subtract 24.650 846.250 – 24.650 = 238.628 Find the standard deviation () square root the varian√e .628 = 15.448 (b.) Fill out the table