I could really use some help

30%

Step-by-step explanation:

Out of the 1,800 people who bought that car, 540 of them said they would buy it again. In this case, you would divide 1,800 by 540. That gives you an answer of .30. To change this to a percentage, multiply by 100 and that gives you 30%.

7

step-by-step explanation:

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^