their relative speed is 4 mph. so we put
4 mph = (25 mi)/x => x=25/4.
2x + 5 = 11
(-5)
2x = 6
(/2)
x = 3
It will increase by 10 individuals per 100 per year
Perimeter is 2(2x+5)+2(x-2) which is 4x+10+2x-4 which is in turn 6x+6. 6x+6 is the perimeter. Hope I helped!
2b + 32 = 8
1. Subtract 32 from 8 which is -24
2b = -24
2. Divide both sides by 2, to make b by itself
b = -12
