It costs $10 $
10
for admission to a carnival and $2.75
$
2
.
75
for each ride ticket. The total cost is =()
C
=
f
(
r
)
, where
r
is the number of ride tickets purchased and ()=2.75+10
f
(
r
)
=
2
.
75
r
+
10
.

Which is the inverse function, −1()
f
-
1
(
C
)
, that can be used to find the number of ride tickets purchased given the total cost?

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

answer: 1 + 1 = 11

step-by-step explanation: