Use the properties of logarithms to rewrite each expression in an equivalent form containing a single logarithm.
log (13/5) + log( 5/4)

  log(13/4)

Step-by-step explanation:

The property of logarithms of interest here is ...

  log(a) + log(b) = log(ab)

Using a=13/5 and b=5/4, we find ...

  log(13/5) + log(5/4) = log((13/5)(5/4)) = log(13/4)

answer: it's d

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.