Question

20 points help pls show work

A scuba diver descends farther down into the ocean from an initial depth of 12.8 feet below sea level. The scuba diver descends at a constant rate for 312 minutes and reaches a depth no more than 49.2 feet below sea level.

What is the maximum rate, r, that the scuba diver may descend?


r≤10.4

r≥13 7/9

r≥10.4

r≤13 7/9

Answer 1

Answer: r≤10.4

Explanation:

Initial depth - 12.8 feet

Maximum depth reached - 49.2 feet

49.2-12.8= 36.4 feet (maximum descent that the scuba diver can make)

Rate = Distance ÷ time

Distance - 36.4 feet

Time - 3.5 minutes

r=
`(36.4)/(3.5)`

r= 10.4

As r is the maxmimum rate found, r cannot be greater than 10.4, so r must be less than or equal to 10.4.

Therefore, r≤10.4