exam Maths Puzzle Numerical Ability

Write an equation for the following using n as the variable. Then solve for n.

Three-fourths of a number equals 3 times the number increased by 9.

Hope you can help. Thanks.

Jill

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exam Other Question

The velocity of a falling object is a linear function of the time t it has been falling. If v = 3 when t = 0 and v = 80 when t = 11, express v as a function of t. For about what value(s) of x does g(x)=k(x) if g(x)=2x^2 -8 and k(x) =-x^2 -2?

x~ +or-2
x~ +or-2.3
x~ 1.4
x~ +or- 1.4