exam Maths Puzzle Numerical Ability

I need help understanding this, Please help. P Varies Directly as R and inversly as the square of S. If P = 175 and R = 252, and S = 6, Find P When R = 196 and S = 7

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exam Other Question

Solve and graph the solution set. 3(x-4)>7x-9. I do not know to solve this problem at all. Your help will be greatly appreciated thank you so much and God bless you to continue helping all of us. Can you help me with this problem?

3x^2 - 6x - 3 = 12 - 6x