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Irshad Ali · Answer 1 · 2019-05-12T03:11:32+0000

Plug in the values:

a. Since d is the variable for days, you would put 3 in it's spot. 3 * 30 = 90. 90 + 75 = 165. The cost is $165.

b. Same thing as a. 1 week is seven days, so fill in d with 7. 7 * 30 is 210. 210 + 75 = 285. The cost is $285.

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