The first amc 8 was given in 1985 and it has been given annually since that time. samantha turned 12 years old the year that she took the seventh amc 8.
in what year was samantha born?
answers:
the seventh amc8 would have been given in 1991, when samantha was 12. therefore, she was born in 1991−12=1979 it 1979

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