Answer:
3x + 2
Step-by-step explanation:
This is the answer because if you distribute 3 to x-1, it would be 3x - 3, and if you add 5, you would get 3x + 2
1. n=18
2. n=18
3. x=4
4. a= -12
5. x=3
9•10^4 / 3•10^3 = 30.
The whale has 30 times the mass of the elephant, or 29 times more. For that reason, it's 29 times heavier than the elephant.
Answer:
The pet sitter babysat his dog for 3 hours.
Step-by-step explanation:
You know that a pet sitter charges $ 20 for supplies and $ 10 per hour of service, represented by the equation C = 10*n + 20, which describes the total cost she would charge for n hours of service.
The pet sitter charges a customer $ 50 for his service, so C has a value of $ 50.
Replacing:
50=10*n+20
Solving:
50 - 20= 10*n +20 -20
30= 10*n
30÷10= n
3= n
<u><em>The pet sitter babysat his dog for 3 hours.</em></u>
