exam Maths Puzzle Numerical Ability

Solve and graph the solution set.
11x + 2 "is greater than or equal to sign" 10x + 13

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exam Other Question

prove cot^2(x)(sec^2(x)-1)=1 When x number of units are sold, the price of each unit(in dollars) is given by p=-x/2+75. Find the unit price when the following qualities are sold: 2,7,9,11.