M. jackson spends $500 per month for rent . his new apartment will cost him 10% more than he is paying now . how much is the rent for his new apartment?

His new apartment will cost him "10% more" than what he is paying currently.

100% = current rent
10% = the extra amount he will pay for his new apartment
100% + 10% = new rent

100% + 10% = 110%

Now convert the percent into a decimal by moving the % sign two places to the left and make the % sign into a decimal point.

110% = 1.10

500 * 1.10 = 550

So, he will pay a rent of $550 for his new apartment.

i believe it's a.

i'm not sure on this one, most likely correct.

good luck!