Question

What is the simplified for of the expression of 7m^2 + 6.5n - 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

Simplify the expression 3(21m + 27).
a. 63m + 81
b. 63m + 27
c. 24m+ 30
d. 21m + 81

What is the product? 7 x (-3)
a. 21
b. -21
c. 4
d. -10

Which property is illustrated by the statement?
2[ -3/9] = [-3/9]2

a. associative property of addition
b. commutative property of multipulcation
c. inverse property of multipulcation
d. commutative property of addition

Can you help me, please!