After each hour 60% ( or 0.60) of the drug will be present.
The equation is A = 100(0.6)^t where t = time in hours. (answer)
X is always dependant to Y. so that should answer the 1st one. the 2nd looks to be around 17-18. 17.5 maybe. and the 3rd is yes cause he does not go to the pool so it isnt any cost.
Answer:

Step-by-step explanation:
1. Use the distributive property to write the problem without parentheses. The distributive property says that you can multiply a number next to parentheses by all the numbers inside parentheses. The picture below explains.

Therefore, your answer is

Answer:
x=-6
Step-by-step explanation:
9x-3x=-36
6x=-36
x=-6
brainliest?
Addition or Subtraction
Addition or Subtraction
Multiplication or Division
Multiplication or Division
all of order. I'll have to confirm this though