Please help I will give brainiest , 5 stars, and thanks!

5.8

Step-by-step explanation:

92.8-80.0=12.8

then 12.8-12.8=0

bold means fill that for boxes

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step-by-step explanation:

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.