A scuba diver started her dive at 2:42 { p. M.}.2, colon, 42, start text, space, p, point, m, point, end text and finished diving at 3{:}17 \text { p. M.}3:17 p. M.3, colon, 17, start text, space, p, point, m, point, end text How long did the dive last?

35 minutes

Step-by-step explanation:

Starting time of the dive of scuba diver = 2:42 PM

Ending time of the dive of scuba diver = 3:17 PM

To find:

Time for which the dive lasted?

Solution:

First of all, let us understand the concept of time.

1 hour of time is competed when 60 minutes are over.

Therefore, after 2:42 PM, 03:00 PM time is taken when 60 minutes are over.

Initially, number of minutes = 42

Number of minutes to 3:00 PM = 60 - 42 = 18 minutes

And up to the time, 3:17 PM, number of minutes = 17 minutes

Total time for which the dive lasted = 17 + 18 = 35 minutes

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer