Answer:
a) P = 10(8(V -5)) -150
b) P = 80V -550
c) P = 3450
Step-by-step explanation:
a) Use the expression for B to substitute into the equation for P:
P = 10(8(V -5)) -150
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b) Eliminate parentheses and collect terms.
P = 10(8V -40) -150
P = 80V -400 -150
P = 80V -550
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c) Substitute 50 for V and do the arithmetic.
P = 80·50 -550
P = 3450