Select the following sentence that represents the equation below: 3(n/2+1) = 3n + 12
A. The quotient of a number and two increased by one all multiplied by three is equal to three times a number increased by twelve.
B. The product of a number and two increased by one is equal to twelve more than the quotient of three and a number.
C. The sum of the product of two and a number plus one times three is equal to twelve more than the product of three and a number.
D. Three times the sum of twice a number and one is equal to twelve less than the product of three and a number.​

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20

step-by-step explanation:

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x