The formula a = m − n represents the actual cost, a, of an item with original price m after a coupon for n dollars off is applied. Solve the formula for the amount of the coupon. Group of answer choices n=a+m n=m−a n = a − m n = −m − a

Option B.

Step-by-step explanation:

The given formula is

where,

a = actual cost of an item.

m = Original price

n = Amount of coupon

We need to solve the formula for the amount of the coupon (n).

In means, we need to isolate n in the given formula.

We have,

Subtract m form both sides.

Multiply both sides by -1.

So, .

Therefore, the correct option is B.

step-by-step explanation:

answer:   c ?

step-by-step explanation: