A washing machine is filling up with water at a constant rate. The rate is Three-fourths of a gallon in StartFraction 1 over 5 EndFraction of a minute. Don calculated the unit rate to be StartFraction 3 over 20 EndFraction of a gallon per minute. What did he do wrong? He added Three-fourths to StartFraction 1 over 5 EndFraction instead of multiplying Three-fourths by StartFraction 1 over 5 EndFraction.
He divided Three-fourths by StartFraction 1 over 5 EndFraction instead of multiplying Three-fourths by StartFraction 1 over 5 EndFraction.
He added Three-fourths to StartFraction 1 over 5 EndFraction instead of dividing Three-fourths by StartFraction 1 over 5 EndFraction.
He multiplied Three-fourths by StartFraction 1 over 5 EndFraction instead of dividing Three-fourths by StartFraction 1 over 5 EndFraction.

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.

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step-by-step explanation:

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.