A. $3500
B. 32 copies
Step-by-step explanation:
Hi! We can use the formula given in the problem to solve both question parts.
Formula : [tex]\boxed{P=2500+40c}[/tex]
Where:
- [tex]P ~ is ~ total ~ pay ~[/tex]
- [tex]c ~ represents ~ copies ~sold[/tex]
- [tex]40 ~ in ~ front ~ of ~ c ~ represents ~ price ~ per ~ copy ~ sold[/tex]
Let's use this information to solve!
Solving:
A.) To find Maira's total pay if she sells 25 copies, we just need to plug in 25 for [tex]c[/tex] in the equation and evalutate the value of P.
[tex]P = 2500 + 40 \times 25 \\ P = 2500 + 1000\\ \boxed{\boxed{ P = 3500}}[/tex]
B.) To find the amount of copies Maria sold, we must work backwards. Plug in $3780 for P(total pay) and work backwards to find the amount of copies.
[tex]3780 = 2500 + 40c\\ 3780 - 2500 = 40c\\1280 = 40c \\ \boxed{\boxed{c = 32}}[/tex]
That's it!
