Answer:
8(15-m)
Step-by-step explanation:
By looking at the options, we can understand that the right one is 8(15-m), since we need to multiply the time by the number of question.
Also, we can check that result by arranging an equations usint the total time.
55 = 3m - 8(15-m)
55 = 3m - 120 + 8m
55 = 11m - 120
55 + 120 = 11m
175 = 11m
m = 175/11 = 15.91
55 = 3*15.91 - 8(15-15.91) = 47.73 - 120 + 127.28 = 55.01 ≈ 55
Here is the answer for math problem
Answer:
3<x<5
Step-by-step explanation:
5<2x-1<9
Add 1 on all the sides because of the inverse operation.
Which is 6<2x<10
The divide 2 on all sides to isolate x.
Which is 3<x<5.
