A submersible is a type of underwater vessel. Suppose a submersible starts at a depth of 40 feet below sea level, represented by -40 feet. The table shows the submersible's
change in depth from one minute to the next.
Time and Depth of Submersible
2:15 p. m.
2:16 p. m.
2:17 p. m.
2:18 p. m.
- 40 feet
180 feet lower
175 feet lower
185 feet lower
Answer the questions to find the depth of the submersible after 3 minutes.
1. Write and evaluate a subtraction expression to find the depth of the submersible at
2:16 p. m.
Write your answer in the space below.

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