Help me solve this question pls

15%

Step-by-step explanation:

Formula to find percentage increase/decrease/multiplier:

NV = OV x m

In words: New value = Old value x multiplier

In this question we're looking for the m (multiplier), so rearrange the formula and make m the subject.

m = NV / OV

So NV is the increase: 3162.50

OV = 2750

So 3162.50 / 2750 = 1.15

This is the multiplier (1.15) so turn into percentage by multiplying by 100 then subtract by 100.

1.15 * 100 = 115 - 100 = 15%

And the fact that the number is postive is proof that price has increased, if it was decrease, you would be expecting a negative number. Hope you understood. :)

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11-1 > 1-1+a

-12 > a

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)