A golf lesson lasts from 10:00am -11:15 and includes a 15 min break with equal lengths of time before and after the break. At what time should the break start?

10:30am

Step-by-step explanation:

total lesson time is 1 hr and 15 min (10 to 11:15).

lesson time is 1 hr total and the break mid way is :15 long.

the lesson before the break is from 10-10:30 (:30 length)

break is at 10:30 (:15 long concluding at 10:45).

lesson resumes at 10:45 when break is over

the lesson runs another :30 until 11:15 (10:45-11:15)

halfway thru the lesson is 10:30am for the break to start

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

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

853.3

step-by-step explanation: