H(x)=5x+15+4x+20
if x=4, together it would be 5(4)+15+4(4)+20
h(x)=20+15+16+20=71
Divided by 2, they'd each get 35.5
If Frank worked alone, he'd get 5(4)+15= 35
He'd make more working together.
Answer:
Both are correct
-1 x -1 = 1
-1 x -1 x -1 = -1
Hope this helps
Step-by-step explanation:
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Please, see the attached file.
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