Jimmy is selling used books at a yard sale. A customer buys 9 books at a cost of $0.75 each and pays with a $20.00 bill. Jimmy must determine c, the amount of change in dollars he should give the customer. Which equation represents c?

c = 20.00 - 9(.75)

Step-by-step explanation:

 the equation will look like: c=13.25=6.75-20.00=9x0.75

Step-by-step explanation: first you will multipy 0.75 by 9 and you will get 6.75. then you will subtract 20.00- 6.75 and get 13.25. he will give the customer $13.25 back.

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft