Aquadratic trend equation was estimated from monthly sales of trucks in the united states from july 2006 to july 2011. the estimated trend is y(t) = 106 + 1.03 t + 0.048 t^2, where y(t) units are in thousands. from this trend, how many trucks would be sold in july 2012? (a) about 308,419 (b) about 524,889 (c) about 436,982 (d) about 223,831

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