This is a question with multiple choice answer. Could you guys check if my answer is right? and if its not could you help me out?? Thank u much appreciated.
The cost of hiring the floor sander is shown below
FLOOR SANDER HIRE --> £12 BASIC CHARGE PLUS £18 PER DAY
1. What is the cost of hiring the floor sander for 4 days? the answer i chose was £84
(a) £60
(b) £72
(c) £84
(d) £120
2. A customer has £120. What is the longest time she can hire the sander for? I said 6 days
(a) 3 days
(b) 5 days
(c) 6 days
(d) 7 days
3. Which formula shows the cost in £(C) of hiring the sander for n days? i said C = 12+18n
(a) C= 12+18+n
(b) C= 12 +18n
(c) 12n +18
(d) C= 12