Question

I need help with question 9

Answer 1

Option D

Explanation:

Total number of posters Rhett puts up = 9

Printing cost of each poster = $2

∴Total cost on posters = (
`(2 dollars)/(1 poster)`) × (9 posters)

= $18

Note: The unit multiplier used above is arranged in a way that the current unit of “posters” is cancelled out and the answer is assigned with the new unit of “dollars".

Number of fliers Rhett gives out = x

Printing cost of each flier = $0.20

∴Total cost on fliers =
`(0.20 dollars)/(1flier)` × (x fliers)

= $0.20x

Note: The unit multiplier used above is arranged in a way that the current unit of “fliers” is cancelled out and the answer is assigned with the new unit of “dollars”

∴How much it cost Rhett to search for his lost puppy:

y = Total cost on fliers + Total cost on posters

∴
`y = 0.20x + 18`

∴Option D