jason is keeping track of the amount of money that he spends on gas each month. below are the amounts for last month:
$24.75
$30.25
$34.60
$38.90
what is the best estimation for the amount that jason spent on gas last month?
a) 20 + 30 + 30 + 40
b) 20 + 30 + 35 + 40
c) 25 + 30 + 35 + 40
d) 30 + 30 + 35 + 40

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