35 miles per hour
Step-by-step explanation:
The slope is
m = (y2-y1)/(x2-x1)
= (280-210)/(8-6)
= 70/2
= 35 miles per hour
452,489 to the nearest thousand is 452,000
e^-kt = n/n0 = 0.79
-kt = ln 0.79
t = - ln 0.79/0.0001
= 2357 years
step-by-step explanation: