Question 10 of 30 (1 point) | Question Attempt: 1 of 1 2 = 3 4 5 6 7 8 9 10 11 12 13 Chang is a software salesperson. His base salary is $2500 and he makes $40 more for every copy of English is Fun he sells. His total pay, P (in dollars), after selling c copies is given by the following function. P(c) =2500 +40c Answer the following questions. (a) If Chang's total pay is $3780, how many copies did he sell? copies (b) What is Chang's total pay if he sells 23 copies? X