exam Maths Puzzle Numerical Ability

Check wether the given number is a solution of the inequality.
2y-21<0.9;8

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exam Other Question

Profit: A small appliance manufacturer finds that the profit P (in dollars) generated by producing x microwave ovens per week is given by the formula
P=1/10(x)(300-x) provided th apply the following translation to y=x^2
y=-(x-1)^2+5
a. sketch a graph by translating the original graph
b. describe the translation in words
c. give the mapping notation
d.