The slope of the line passing through the points (7, 5) and (21, 15) is .

Another line with a slope that is one-third that of the slope you just calculated passes through the origin and the point
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Answer for 2: his profit would be $2.88 explanation: you have to first multiply 72 and 0.12 together to get $8.64 once you do that you know how much money the shopkeeper made from selling the candy bars individually. so you have to do 8.64-5.76=2.88 hope that ; )answer for 3: yeah i’m sorry i have no idea what number 3 is. i’m sorry i couldn’t with that.

Ithink it's b sorry if i'm wrong

The answer is, the streetlight is 18 inches tall.