exam Maths Puzzle Numerical Ability

The price of an item is given by p=2x^2-100. Find the polynomial that represents the revenue generated from the sale of x items.

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exam Other Question
30 ? x 2mi over 1h = 60mi 12a^7+16a^5-8a^2/-4a^2

N=3(x-7)+Ty^3 for x=3, y=4, T=6

R=T^2+(z-x)^2-2y for x=3, y=4, z=5, T=6

Solve for R
S=PRT/3+T