The cost of cheese varies directly with the number of pounds bought suppose 3 pounds cost 8.40 Write an equation relating the weight and the cost of the cheese

What is the constant of variation

Find the cost of three pounds of cheese

pound of cheese is $2.80

Step-by-step explanation:

8.40 divided by 3 is 2.80

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b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.