Nelson decides to mix grades of gasoline in his truck. he puts in 99 gallons of regular and 66 gallons of premium for a total cost of $46.95$⁢46.95. if premium gasoline costs $0.20$⁢0.20 more per gallon than regular, what was the price of each grade of gasoline?

Afurniture manufacturer produces chairs and sofas. each chair requires 10 yards of fabric, and each sofa requires 20 yards of fabric. the manufacturer has 300 yards of fabric available. to fulfill orders, the number of sofas must be at least twice the number of chairs. let x be the number of chairs and y the number of sofas. which inequalities are described in the problem? check all of the boxes that apply

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12

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