1.What is the simplified form of the following expression?
7m^2+6.5n-4n+2.5m^2-n

A.
9.5m^2+1.5n
B.
4.5m^2+1.5n
C.
1.5m^2-4.2n
D.
9.5m^2-1.5n

2.simplify the following expression

1/4(16-12x)

A.4+3x
B.4-3x
C.4+3
D.4-3

3.what is the sum?
7/3+(-3/8)

A.65/24
B.47/24
C.-4/5
D.-5/4