100-20=80%
percent means parst out of 100
80%=80/100=8/10=4/5
60=80% of original
60=4/5 of original
times both sides by 5/4
300/4=original
75=original
regular price is $75
Answer: the price of a bottle of water is $1.5
Step-by-step explanation:
Let x represent the price of one pretzel.
Let y represent the price of one bottle of water.
At the shopping mall, Joaquin bought 4 pretzels and a bottle of water for 11.50. It means that
4x + y = 11.5- - - - - - - - - -1
Kelly bought 3 pretzels and a bottle of water for 9.00. It means that
3x + y = 9- - - - - - - - - - - - 2
Subtracting equation 2 from equation 1, it becomes
x = 2.5
Substituting x = 2.5 into equation 1, it becomes
4 × 2.5 + y = 11.5
10 + y = 11.5
y = 11.5 - 10
y = 1.5
Answer:
C =131.88 cm
Step-by-step explanation:
We can find the circumference of a circle by using
C = pi * diameter
C = 3.14 * 42
C =131.88 cm
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Find Slope :
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y = 3x + 4
Slope = 3
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Form equation :
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y = 3x + b
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Find y-intercept :
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At (1, 2)
2 = 3(1) + b
2 = 3 + b
b = -1
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Form equation :
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y = 3x -1
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Answer: y = 3x - 1
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