Question

A blank trophy costs $20. Each letter engraved on the trophy costs $3. Which expression models the cost of a trophy with n letters engraved?

Answer 1

So it's 20 dollars, plus three times the number of letters engraved, which is n.

So it's
20 + 3n

:D

Answer 2

how it :D

Answer 3

how it? /

Answer 4

Paula conducts a study, recording the total distance a forest has advanced into a grassy valley. She uses this equation, where y is the number of years since Paula’s study began, and f is the total number of feet the forest has advanced.

f = 3y + 54

If the forest has advanced into the valley 90 feet, how many years have passed since Paula’s study began?

Answer 5

Take f = 90, and solve for y.
90 = 3y + 54

Answer 6

Lucy makes and sells photo albums. Her monthly expenses are $600 plus $2 for each album she sells. Her income for each album sold is $10. The inequality below can be used to find the least number of albums Lucy should sell so that her income is greater than her expenses.

600 + 2a < 10a

Which values of a make this inequality true?




A.

a > 75




B.

a > 60




C.

a > 50




D.

a > 45