What is the greatest common factor of 42 and 14?

It is 14 because if you do prime factorization:

14 = 2 x 7

42 = 2 x 3 x 7

They have the factors 2 and 7 in common.

2 x 7 = 14.

The GCF is 14!

Step-by-step explanation: Okay Lets multiply to get 42, 14 x 1 is 14, 14 x 2 is 28, 14 x 3 is 42! We also know that this is the GCF because 42 and 14 can both be divided by 14!

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.