William bought 5 rulers for $7.50. If r represents the cost of one ruler, which equation represents this situation? Group of answer choices

5r = 7.50

r/5 = 7.50

r + 5 = 7.50

7.50r = 5

5r = 7.50

Step-by-step explanation:

As, the cost of 1 ruler = r

So, r times 5 ruler will give u the cost of 5 rulers, which is 7.50

So, 5r = 7.50

step-by-step explanation:

to find if any function is an inverse of the other, put the first equation in as x in the next one. then simplify and solve. if at the end you get the statement y = x, then it is an inverse. if you get anything else, it is not.

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step-by-step explanation: