7. Match each expression in the left column with an equivalent expression in the right column.
A
n +n +n +n
B.
4n-36
C.
n(9-4)
D.
4(n-36)
E.
4n-9
1.
(n-36) -4
2.
4n +-9
3.
4n
4.
9n-4n
5.
4(n-9)

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Ineed i been stuck on this question since yesterday

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?