Answer: The answer is that he cleaned one room
Step-by-step explanation:
Because he charged in total 77 dollars and he charged 77 dollars per room, so 77*1=77=c
Answer:
18
90% of 20 is 18
(-x-2) (-2x -3)=0
=>[-(x +2)] [-(2x+3)]=0
=>(x + 2)(2x +3)=0
=>x =-2 or,x=-3/2
smaller x=-2
larger x =-3/2
