Tom is showing his work in simplifying (5.2 – 8.5) – 0.5 + 6.8. in which step did tom make an error? step 1: : (5.2 – 8.5) – 0.5 + 6.8 step 2: 5.2 + (–8.5 – 0.5) + 6.8 (distributive property) step 3: 5.2 – 9 + 6.8 step 4: 5.2 + 6.8 – 9 (commutative property) step 5: 12 – 9 = 3 step 2; he wrote distributive instead of commutative step 2; he wrote distributive instead of associative step 4; he wrote commutative instead of associative step 4; he wrote commutative instead of distributive

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