Answer:-47/40
Step-by-step explanation:
If the bases are the same then you can let the exponents be equal to each other. If the exponents are not the same then you will have to use logarithms to solve for x.
Answer:
87
Step-by-step explanation:
15+(+72)--> 15+72
15+72=87
Answer:
12.
Step-by-step explanation:
if to re-write the given condition, then

it is clear, the required constant is 12 (12 per hour).