Answer:
d. only the first equation is an identity
Step-by-step explanation:
1/2 of a gallon if the pool will be gone each hour
180-30=150, it's simple math...
Answer:
Step-by-step explanation:
Definition: Let f be one-to-one function with the domain A and the range B. Then the inverse function 
has the domain B and the range A and is defined as
Facts:
1) For every 
2) For every 
So,
7(3x-2)+4(x+5)
= 7*(3x)-7*2+4x+4*5 (distributive property)
= 21x -14 +4x +20
= 25x +6
Final answer: 25x+6.
Hope this helps~
