Solve the following polynomial expression: (5x^4-9x^3+7x-1) + (-8x^4+4x^2-3x+ 2) - (-4x^3+5x-1)(2x -7)
1 answer:
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Answer:
Adult tickets cost $20, child tickets cost $15
Step-by-step explanation:
I'm going to assume that we have to say how much the tickets cost
x- cost of an adult ticket
y- cost of a child ticket
10x+3(115-5x)=245
10x+345-15x=245
-5x=-100
x=20
y=115-5*20=15
Answer:
the answer to the question is answer C
