Aboard is cut so that its length is changed from 8 feet to 6.5 feet. what is the percent of change in length? round your answer to the nearest tenth, if necessary. a. –18.8% c. 18.8% b. –23.1% d. 81.2%

it went from 8 to 6.5, namely 8 - 6.5 = 1.5.

if we take the 8 to be the 100%, what is 1.5 off of it in percentage?

well, we can round that up to 18.8%, however since it's a subtraction from the board, we can say is -18.8%, a negative percent, because is a percent that was taken out of it.

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.