Question

PLEASE ANSWER QUICKLY I WILL MARK BRAINIEST AND 70 POINT
3. A scuba diver was exploring a reef 41.36 m below sea level. The diver ascended to the surface at a rate of 7.4 m/min.
(a) Write an equation to model the situation. Use the formula d = rt.
(b) Why do we write the distance, d, as a positive number?
(c) How long did it take the diver to reach the surface? Round to the nearest hundredth.

Answer 1

a) You are given the rate as 7.4m/min,

The equation would become d = 7.4t where d is the total distance and t would be the total number of minutes.

b) d would be a positive number because the diver is ascending, which means he is moving up towards the surface.

c) To find how long it took the diver, replace d with 41.36 ( how deep the diver was) and solve for t:

41.36 = 7.4t

To solve for t, divide both sides by 7.4:

t = 41.36 / 7.4

t = 5.59 minutes ( 5 minutes and 35 seconds)