exam Maths Puzzle Numerical Ability

the equation for the area of a triangle is a=1/2bh. suppose the area of triangle DEF is 30 square inches.
1.)solve the equation for h
2.)state the independent and dependent varia

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exam Other Question
0.3x-0.2y=4
0.2x+0.5y=-3 Rewrite the equation 2x-3y=-6 as a function of x

Please help me on this to solve it.
A function notation problem

Thanks