exam Maths Puzzle Numerical Ability

Assume that the bounce height B (in inches) of a tennis ball varies directly as the drop height d (in inches). The bounce height of the tennis ball is 20 inches when dropped from

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exam Other Question

solve the following system of linear inequalities by graphing

x-3y>6
3x+2y>12 Given f(x) = -x3 - 3x2 - 2x - 6, find f(-3), f(0), and f(3)
Now do I have to substitue a number for x? I am so confused!! Thanks for your help!