exam Maths Puzzle Numerical Ability

Which of he following expressions represents the product of 3 less than twice x and 2 more than quantity 3 times x? Can i have this problem explained to refresh my memory?

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Please Please Please! help me solve this problem
Sketch the graph the feasible region.

x + y ≥ 7
5x + 7y ≥ 42
x≥0
y≥0 A baker creates a 50 oz. sugar solution that was 34% sugar from a 30% sugar solution and a 40% sugar solution. How many ounces of the 30% and the 40% sugar solution were used?