Answer:
Step-by-step explanation:
to be honest you guy should just use photo math its faster and i you dont need to pay to get answer
X=36.... because 17-36=19
Then, it would be 156 + 156*6.5 /100 = 156+10.14 = $166.14
Answer:
11 years old
Step-by-step explanation:
If four brothers have the average age 6, then the sum of their ages is

years.
Let x years be the age of sister. If four brothers and their sister have the average age 7, then

Multiply this equation by 5:

The sister is 11 years old.
The prime number will be 69 and 89