exam Maths Puzzle Numerical Ability

p(x)=6x^4+22x^3+11x^2-38x-40

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exam Other Question

Solve for 'x':
a) 3^x=81
b) 3^x=88
c) 5^2x=705
d) (0.5)(^-3x+1)=4000 A quality control inspector found flaws in 13 out of 150 sweaters.

HERE IS THE QUESTION: Suppose the company produces 500 sweaters a day. How many will not have flaws?

Thanks you so much whoever solves this!!!!