Answer:
13
Step-by-step explanation:
1. Put 5 in for x. 2×5+3
2.10+3
3.13
Answer:
D
Step-by-step explanation:
Answer:
he will be 9
Step-by-step explanation:
Answer:
The top one I think
Step-by-step explanation:
The numbers of quarters, dimes and nickels that were deposited are 5, 9 and 12 respectively.
He deposited $2.75 in nickels , dimes and quarter in his piggy bank.
let
number of quarter = x
number of dimes = x + 4
number of nickels = x + 7
1 dimes = $0.1
1 nickels = $0.05
1 quarter = $0.25
The total money he had in dollars is $2.75. Therefore,
- 2.75 = 0.25x + (x + 4)0.1 + 0.05(x + 7)
Therefore,
2.75 = 0.25x + 0.1x + 0.4 + 0.05x + 0.35
2.75 - 0.4 - 0.35 = 0.25x + 0.1x + 0.05x
2 = 0.4x
x = 2 / 4
x = 5
Therefore,
number of quarters = 5
number of dimes = 5 + 4 = 9
number of quarters = 5 + 7 = 12
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