Answer: 
Step-by-step explanation:
By the negative exponent rule, you have that:

By the exponents properties, you know that:

Therefore, you can rewrite the left side of the equation has following:

Descompose 32 and 8 into its prime factors:

Rewrite:

Then:

As the base are equal, then:

Solve for x:

Answer:
60
Step-by-step explanation:
If he gave 15 grapes to his friends and he has 45 left, add 15+45 to get 60.
A system of linear equations that must be solved algebraically is when numbers are very large or very small or when those that have to be accurate to several decimal places which is hard to graph.
Answer:
200+50+3
Step-by-step explanation:
Answer:
Buy a yardstick
Step-by-step explanation:
One yard stick is 3 feet long
I hope this helps :)