You can figure out if two fractions are bigger by just cross multiplying the numerator and denominator of each fraction.

Multiply the 5 and 7, and then the 3 and 12. Be sure to start with the numerator of the first fraction.

5 * 7 = 35, 3 * 12 = 36
So

is bigger.
Answer: 45 miles per hour
Step-by-step explanation:
Answer: 3/5
Step-by-step explanation:
First, you need to find the inverse of f(x)=2x+5 .

Then, you'd plug in 8 into that equation, which I got 
Hope this helps :)
Answer:
B. (0.87, 0.48)
Step-by-step explanation:
I calculated it logically
Answer:
42 is 15
Step-by-step explanation:
42 is 15 because of x