Answer:
If they sells 15 prints they will lose $85.
Step-by-step explanation:
Consider the provided function.
[tex]f(p) =17p-340[/tex]
First find If the group sells 15 prints, how much they will lose.
Substitute p=15 in above equation.
[tex]f(p) =17(15)-340[/tex]
[tex]f(p) =255-340[/tex]
[tex]f(p) =-85[/tex]
If they sells 15 prints they will lose $85.
Find if the group sells 12 prints, how much they will lose.
Substitute p=12 in above equation.
[tex]f(p) =17(12)-340[/tex]
[tex]f(p) =204-340[/tex]
[tex]f(p) =-136[/tex]
If they sells 12 prints they will lose $136.
Find if the group sells 35 prints, how much they will make.
Substitute p=35 in above equation.
[tex]f(p) =17(35)-340[/tex]
[tex]f(p) =595-340[/tex]
[tex]f(p) =255[/tex]
If they sells 35 prints they will gain $255.
If the group sells 28 prints, how much they will make.
Substitute p=28 in above equation.
[tex]f(p) =17(28)-340[/tex]
[tex]f(p) =476-340[/tex]
[tex]f(p) =136[/tex]
If they sells 28 prints they will gain $136.
Hence, the true statement is If they sells 15 prints they will lose $85.