Your answer is 43 / 4.
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Answer:
- Blueberry pie costs $9, lemon meringue cost $14
Step-by-step explanation:
<u>Set equations:</u>
- 13x + 12y = 285
- 3x + 12y = 195
<u>Solve by elimination. Subtract the second equation from the first:</u>
- 13x + 12y - 3x - 12y = 285 - 195
- 10x = 90
- x = 9
<u>Find the value of y:</u>
- 3*9 + 12y = 195
- 12y = 195 - 27
- 12y = 168
- y = 168/12
- y = 14
First we divide the total value of the stamps he has left with the cost
so its: $5.55÷$0.15 = 37
so now he has 37 stamps
just add the number of his misplaced stamps
37 + 7 = 44
Tony originally had 44 stamps
F(x) = mx + c
f(x) = 3x + 4
