A submarine dives 320 feet below the water's surface. Over the next six minutes, it rises at a rate of 40 feet per minute. What integer represents the
position of the submarine after the six minutes?

80

Explanation:

Since it rises at a rate of 40 feet per minute, just multiply 40 times 6 to get 240. Then subtract 320 minus 240 to get 80

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13