Describe a proportional relationship involving some product or service and its cost that IS proportional. Explain why it is a proportional relationship, and identify the constant of proportionality. Show your work. Use tables, graphs words, and numbers to explain your answer.
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For which pair of functions is (gof)(a)=|a|-2?

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.