HELP!Which property was used to rewrite the equation 2^x − 7 = 1 as 2^x = 8 ? A. Addition Property of Equality
B. Commutative Property
C. Multiplicative Inverse
D. Substitution Property of Equality

it would take 7/10 of an hour too fill the pool.

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.

is there any other information given for this problem? this is not enough information.