Answer: B
Step-by-step explanation:
First, simplify the main expression. The answer is 21.
Then simplify A. It is -106. That is not equal to 21 so A is wrong.
Then simplify B. That is 21. That means B is correct and you don’t have to solve C or D.
Answer:
Step-by-step explanation:
25*20=500
500*2=1000
you need to charge $2 for each candy bar
It is 110 hope this helps.
Answer:
10 km
Step-by-step explanation:
0.5*2=1 hour
5*2=10 km
Answer:
C
Step-by-step explanation:
x^3+4x^2-9x-36=0
or x²(x+4)-9(x+4)=0
or (x+4)(x²-9)=0
or (x+4)(x+3)(x-3)=0
x=-4,-3 or 3
