If the price charged for a candy bar is p(x) cents, then x thousand candy bars will be sold in a certain city, where p(x)=49-x/20. How many candy bars must be sold to maximize revenue?

Suppose a rumor is spreading that the government plans to give each college student $1000. Asssume that 20 people have heard the rumor as of today and that each day the number of people (past and present) who have heard it triples. Let f(t) be the number of people (past and present) who have heard the rumor at t days since today. a. Find an equation of f. b. How many people (past and present) will have heard the rumor 10 days from now? c. How many people (past and present) will have heard the rumor 15 days from now? Has model breakdown occurred? [Hint: Assume that the population is 112 million.] a. Find an equation of f. f(t) = ¹ b. How many people (past and present) will have heard the rumor 10 days from now? people c. How many people (past and present) will have heard the rumor 15 days from now? people Has model breakdown occurred? A. Model breakdown has occurred because the value for f(15) is greater than the population. B. Model breakdown has not occurred because the value for…

Find the volume V of the solid obtained by rotating the region bounded by the given curves about the specified line. y = x + 1, y = 0, x = 0, x = 5; about the x-axis V = Sketch the region. y y y y 7 6 6 6 6 5 5 5 5 4 4 4 4 3 3 3 2 2 1 1 1. 2. 3 4 1 4 6. 2 3 4 6. 2 3 4 Sketch the solid and a typical disk or washer. Interactive 3D Graph O Help A Interactive 3D Graph Help Interactive 3D Graph O Help 10 10 10 5 ++++|||||| -10 -5 10 -10 10 -10 -5 -5 -5 -5 r-10 -10 -10

The equations that represent the balance in three different savings accounts x years after 2012, A(x) = 900(1.05) B(x) = 1100(1.038)* C(x) = 5000(0.85)* Which of the following statements are TRUE? Check all that apply. Account C had the largest balance in the year 2012. Account A is growing faster than account B. The balance of Account A is growing at a rate of 5% per year. The balance of Account C is decreasing at a rate of 85% per year. X