Simplify 7(n+2)

a
7n-14
b
-7n+14
c
n+9
d
7n+14

Fractions can be added and subtracted only if they're fractions. a. like b. proper c. improper d. unlike

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?