To make copies of blueprints, Vantage Reprographics charges a $5 setup fee plus $3 per copy. Myra can spend no more than $59 for copying her blueprints. What numbers of copies will allow her to stay within budget?
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A.
Myra can make
nothing or fewer copies.
B.
Myra can make at least
nothing copies.

A.

Myra can make 18 or fewer copies

Step-by-step explanation:

Let n be the no. of copies

The cost:

5 + 3n《59

3n《54

n《18

see below

Step-by-step explanation:

The cost of copies

5+ 3c  where c is the number of copies

It must be less than or equal to 59 dollars

5 +3c ≤ 59

Subtract 5 from each side

5-5 +3c ≤ 59-5

3c ≤ 54

Divide each side by 3

3c/3 ≤ 54/3

c ≤ 18

She can make 18 copies or less

your answer would be 12

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.