Keli is buying pajamas for her five closest friends. Using the graph shown below, how much money will it cost her if she decides to buy a sixth pair of pajamas for herself?
Kelli's Gifts
80
70
60
50
Cost (dollars)
40
30
20-
10
6
0 1 2 3 4 5
Number of Pajamas
A $62.50
B
$75.00
с
$80.00
D
$150.00