Mr. home buys two quarts of ice cream, one carton of soda, and three sacks of cookies for a sunday school party. the respective unit prices are 60, 70, and 45 for each unit. on his way home mr. home remembers that he will have several extra visitors, returns to the same store, and buys three times the same order. find mr. home's total expense by matrix calculations.

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