SOLUTION: My problem is the polynomial function f(x)=0.004x^3-0.15x^2+4.9x + 7. Find the height of the track for x = 30

Question 150958This question is from textbook
: My problem is the polynomial function f(x)=0.004x^3-0.15x^2+4.9x + 7. Find the height of the track for x = 30 This question is from textbook

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given equation.

Plug in .

Cube to get .

Square to get .

Multiply 0.004 and 27,000 to get 108

Multiply -0.15 and 900 to get -135

Multiply 4.9 and 30 to get 147

Combine like terms

So the height is 127 units (you forgot to include the units in the problem) when
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