Answer:
22
Step-by-step explanation:
If x = 5, then plug 5 in for x .
3(5) + 7
15 + 7 = 22
When multiplying two powers that have the same base, you can add the exponents.
Answer:
months
Step-by-step explanation:
Given that company 
charges 
upfront and 
per month and company B does not charge the upfront fee but charges 
per month.
Let after 
months both the company charges the same amount.
Total charges by the company 
and total charges by the company 
.
Now, from the given condition both the charges are equal, so
Hence, after months both the company charges the same amount.
