Your answer would be: it equals f-x
Answer:
30
Step-by-step explanation:
Answer:

Step-by-step explanation:
Let:

So, rewritting the equation:

Factoring:

Therefore:

Substitute back for 
for y=2
Taking the logarithm base 10 of both sides:

for y=1
Taking the logarithm base 10 of both sides and adding 1 to both sides:


so:

Hence:

Answer:
b
Step-by-step explanation:
1 mile = 3 laps.
3x7=21
21=hour
21/7=<u>3</u>