What will the last payment be to pay off a $1250 computer +8% tax with monthly payments of $120

a. 10
b. 11
c. 12
d. 20
e. 30

Yoku is putting on sunscreen. he uses 2\text{ ml}2 ml to cover 50\text{ cm}^250 cm 2 of his skin. he wants to know how many milliliters of sunscreen (c)(c) he needs to cover 325\text{ cm}^2325 cm 2 of his skin. how many milliliters of sunscreen does yoku need to cover 325 \text{ cm}^2325 cm 2 of his skin?

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

Asap! i'm not good math and i'm lost.