Item total quantity bought unit cost total cost percent markup on cost total selling price percent that will spoil selling price per brownie brownies 20 $0.79 $15.80 60 % $25.28 10 % selling price?

step-by-step explanation:

12475909

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

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