PROBLEM SOLVING You are shopping for a video game system. A table shows store, cost to store, and markup. The store, cost of store, and markup are as follows. A, 162 dollars, 40 percent; B, 155 dollars, 30 percent; C, 160 dollars, 25 percent. a. At which store should you buy the system? Store A Store B Store C Question 2 b. Store A has a weekend sale. To the nearest hundredth of a percent, what discount must Store A offer for you to buy the system there? Store A must offer at least a % discount.

Ahigh-altitude spherical weather balloon expands as it rises, due to the drop in atmospheric pressure. suppose that the radius r increases at the rate of 0.02 inches per second, and that r = 36 inches at time t = 0. determine the equation that models the volume v of the balloon at time t, and find the volume when t = 360 seconds. v(t) = 4π(0.02t)2; 651.44 in3 v(t) = 4π(36 + 0.02t)2; 1,694,397.14 in3 v(t) = four pi times the product of zero point zero two and t to the third power divided by three.; 4,690.37 in3 v(t) = four pi times the quantity of thirty six plus zero point zero two t to the third power divided by three.; 337,706.83 in3