# Math

Find the inverses of each of the functions below algebraically.

p(r)=2r^2+2r−1

3y+5x=18

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1. p(r) or p = 2r2 + 2r - 1

p = 2(r+0.5)2 - 1.5

r = 2(p+0.5)2 - 1.5

(r+1.5)/2 = (p+0.5)2

+-sqrt[(r+1.5)/2] = p + 0.5

p-1(r) = -0.5 +- sqrt[(r+1.5)/2]

After testing, only right-hand side works. Hence p-1(r) = -0.5 + sqrt[(r+1.5)/2]

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2. can you find the other one aswell please

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3. Virtual high school right?

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