13 POINTS NEED THE ANSWERS TO THESE 2 PROBLEMS

9) 30 years

10) line passing through points AB and BC are perpendicular

Step-by-step explanation:

9) p = 5t + 150    

Current pop. (in thousands) is 150

Double pop. (in thousands) is 300

300 = 5t + 150

150 = 5t

t = 30

10) line passing through points AB and BC are perpendicular because their slopes are opposite and reciprocal

slope of AB = 3

slope of BC = -1/3

$60

Step-by-step explanation:

100 - 5 = 95%

95% = 57

divide both sides by 95 to find 1%

1% = 0.6

multiply both sides by 100 to find 100%

100% = 60