Hi I don’t really understand can you explain a little bit please
Answer:
the answer should be x= -9 over 11
Step-by-step explanation:
Answer:
The original price of the book was $12.50
Step-by-step explanation:
3x - 0.2(3x) + 10 = 40
30x - 2(3x) + 100 = 400
30x - 6x + 100 = 400
24x + 100 = 400
24x = 300
x = 12.50
It comes out to 0.8775 so it rounds to about $0.88
Add 4 which equals to 10 then multiply by 2 then that equals 20!
