[a] x = 175 - 7.5p
For a, we are isolating the x variable to one side of the equation.
0.4x + 3p = 70
0.4x = - 3p + 70
x = - 7.5p + 175
[b] x = 115
For b, we are solving for x when p = 8.
x = - 7.5p + 175
x = - 7.5(8) + 175
x = 115
Answer:
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Solution
To solve division problems you can make equal groups
Example

It is
Answer:
900
Step-by-step explanation:
multiply 2x2x3x3x5x5
4x9x25 which is 900