A). If 5^x = 1/125 find the value of x.
b). 3^-3 x 10^-3

15^x=5^-3

x= -3

answer: 414,377,008

step-by-step explanation:

just multiply 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.