Answer:
1. r=5 2. x=2 3. x=-3 4. y=11 5. x=-11
Step-by-step explanation:
1. 7r-7=2r+18
combine
5r=25r
divide
r=5
5. 3(x-4)=5(x+2)
multiply
3x-12=5x+10
-2x=22
x=-11
It should take 10 years
In 1 year, if it triples, it should be 15 (population), and so on.
15
45
135
405
1215
3645
10935
32805
98415
295245
he sold it for $12.00
I think you've got it, I don't know man.
8900
25 * 89 / = 25 * 89 * 4 = 100 * 89 = 8900