Use the table to answer the question.
Number of cars washed Total income ($)
6 42
8 56
10 70
What equation represents the relationship between the two variables?
(1 point)
Responses
y=7x
y equals 7 x
y=x+2
y equals x plus 2
y=x+14
y equals x plus 14
x=7y
x equals 7 y
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9 answers
The correct equation representing the relationship between the number of cars washed (x) and the total income (y) is y=7x.
A baker needs 4 cups of flour per loaf of bread. Write an equation using two variables to show the relationship between the number of loaves, n
, and the total amount of flour used, t
. (1 point)
Responses
t=n4
t equals Start Fraction f over 4 End Fraction
t=4n
, and the total amount of flour used, t
. (1 point)
Responses
t=n4
t equals Start Fraction f over 4 End Fraction
t=4n
The correct equation is t=4n. This equation shows that the total amount of flour used (t) is equal to the number of loaves (n) multiplied by 4 cups of flour per loaf.
A baker needs 4 cups of flour per loaf of bread. Write an equation using two variables to show the relationship between the number of loaves, n
, and the total amount of flour used, t
. (1 point)
Responses
t=n4
t equals Start Fraction f over 4 End Fraction
t=4n
t equals 4 f
t=4−n
t equals 4 minus f
n=4t
f equals 4 t
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, and the total amount of flour used, t
. (1 point)
Responses
t=n4
t equals Start Fraction f over 4 End Fraction
t=4n
t equals 4 f
t=4−n
t equals 4 minus f
n=4t
f equals 4 t
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The correct equation is t=4n. This equation shows that the total amount of flour used (t) is equal to the number of loaves (n) multiplied by 4 cups of flour per loaf.
Anja buys gas for her car at $3 per gallon. Write an equation using two variables to show the relationship between the number of gallons of gas, g , and the total amount of amount she spends, s .(1 point)
Responses
s=g3
s equals Start Fraction g over 3 End Fraction
s=3+g
s equals 3 plus g
g=3s
g equals 3 s
s=3g
s equals 3 g
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Responses
s=g3
s equals Start Fraction g over 3 End Fraction
s=3+g
s equals 3 plus g
g=3s
g equals 3 s
s=3g
s equals 3 g
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The correct equation is s=3g. This equation shows that the total amount of money Anja spends (s) is equal to the number of gallons of gas she buys (g) multiplied by $3 per gallon.
Lola drives her car at 35 miles per hour. Write an equation using two variables to show the relationship between the number of hours she drives, t , and the total distance, d , she drives, after 6 hours.(1 point)
Responses
t=35d; 210 miles
t equals 35 d ; 210 miles
t=35+d; 41 miles
t equals 35 plus d ; 41 miles
d=35t; 210 miles
d equals 35 t ; 210 miles
d=35t; 180 miles
d equals 35 t ; 180 miles
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Responses
t=35d; 210 miles
t equals 35 d ; 210 miles
t=35+d; 41 miles
t equals 35 plus d ; 41 miles
d=35t; 210 miles
d equals 35 t ; 210 miles
d=35t; 180 miles
d equals 35 t ; 180 miles
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The correct equation is d=35t; 210 miles. This equation shows that the total distance Lola drives (d) is equal to the number of hours she drives (t) multiplied by her speed of 35 miles per hour. After 6 hours, she would have driven a total of 210 miles.