exam Maths Puzzle Numerical Ability

Find the inverse function of f.

1. f(x)=1+3x/5-2x

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exam Other Question

Solve each equation. If a solution is extraneous, so indicate.
(5)/(2z+z-3)-(2)/(2z+3)=(z+1)/(z-1)-(1) Use the Intermediate Value Theorem to determine whether the polynomial function has a real zero between the given integers. Yes or No

f(x) = 2x to the third power + 7x t