Francis heard that a car stereo system was on sale for 30% off. If the sale price was $57.75, what was the original price of the
2 answers:
Answer:
$82.50
Step-by-step explanation:
Francis heard that a car stereo system was on sale for 30% off.
The sale price was $57.75.
Let the original price of the car stereo system be 'x'
sale price = x - (30% of x) = 57.75
x - 0.3x = 57.75
0.7x = 57.75
x =
x = 82.5
The original price of the stereo system was $82.50.
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Answer:
(-7,-15)
Step-by-step explanation:
We can substitute first y in the second y. Both equations are also functions. We can merge the equations.
Substitute x = -7 in any given equations. I will choose the second equation to substitute in.
<u>Answer</u><u> </u><u>Check</u>
Substitute both x and y in both equations.
The equation is true for (-7,-15).
The second equation is true for (-7,-15).
Therefore our answer is (-7,-15)