Answer:
ten-dollar bills = 55 pieces
Step-by-step explanation:
Given:
Total number of bills = 105
Total value = $1550
Assume:
twenty-dollar bills = x
ten-dollar bills = 105 - x
Solve:
20x + 10(105 - x) = 1550
20x + 1050 - 10x = 1550
10x + 1050 = 1550
10x = 500
x = 50
twenty-dollar bills = x = 50
ten-dollar bills = 105 - x = 105 - 50 = 55
Check:
twenty-dollar bills =50 x 20 = $1000
ten-dollar bills = 55 x 10 = $550
Total = $1000 + $550 = $1550
2, 5, 8, 11
F(n) = 3n - 1
put n=1
F(1) = 3(1) - 1 = 2
put n=2
F(2) = 3(2) - 1 = 6 - 1 = 5
put n=3
F(3) = 3(3) - 1 = 9 - 1 = 8
put n=4
F(4) = 3(4) - 1 = 12 - 1 = 11
The mean is the average. Add all the numbers together, then divide by the quantity of numbers in the data set.
1040 / 13 = 80
The mean is 80
D)
