What is the least common denominator for this equation?

A. 9
B. 36
C. 36c
D. 12c

B

Step-by-step explanation:

Though it is not obvious, the c belongs in the numberator, not the denominator.

So C and D are both wrong.

9: 3 * 3

3: 3

4:2 * 2

Lowest common denominator = 2 * 2 * 3 * 3

Lowest common denominator = 36

B

y=3n + 1

step-by-step explanation:

this is wrong because it says the second number is one less and i added one instead

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.