Answer:

Step-by-step explanation:

Answer:
Moby had 72 cars to start with.
Step-by-step explanation:
48-12=36
36(2)= 72
Answer:
The first one is a kitten.
Step-by-step explanation:
Next is an eight year old child, next is 300 pounds of potatoes and then a semi truck and trailer.
Answer:
15
Step-by-step explanation:
Factors of 30:
1 , 2, 3, 5, 6, 10, 15, 30
Multiples of 3:
3, 6, 9, 12, 15, etc.
The first number (and only number) shared by both sets is 15, therefore 15 is your answer.
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Answer:
2nd option
Step-by-step explanation:
Simplify first what is in the parenthesis before distributing the exponent outside would help.
Remember that negative exponents simply means that their on the wrong side of the fraction. So if you find a variable with a negative exponent as a numerator, you bring them down and when it is found as a denominator, you bring them up.
Also when you distribute your exponents, you always multiply it to each exponent inside the parenthesis.
Look at the attached picture for the solution