What is the simplified form of the following expression?
7m squared+ 6.5n- 4n+ 2.5m squared - n

1.5n+9.5m^2

Step-by-step explanation:

7m^2 + 6.5n -4n + 2.5m^2 -n

Combine like terms

6.5n-4n-n+7m^2+2.5m^2

1.5n+9.5m^2

The second option: 4 1/2 x = 22 1/2

The whole volume is 22 1/2 so that is on one side of the equals sign but it must be by itself. Then the formula for volume is length x width x height.

so 22 1/2 = l x w x h

Two of these numbers are given. You multiply 3 x 1 1/2 to get 4 1/2 times the unknown value of x

Step-by-step explanation: