Evaluate the algebraic expression for 4(1-1)-(1+3)-5(2•1-1)

it could be 1,3 and more others to create a cylinder.

step-by-step explanation:

21

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.