Answer: 76 miles per hour
<u>Step-by-step explanation:</u>
east bound: t = 4, r = x - 18
west bound: t = 4, r = x
d = r * t
680 = 4(x - 18 + x)
680 = 4(2x - 18)
170 = 2x - 18
188 = 2x
94 = x
eastbound: x - 18 = 94 - 18 = 76
Well im a rastafarian so u know everything, Bumboclaat
Answer:
2007
Step-by-step explanation:
we have

This is a vertical parabola open upward
The vertex represent a minimum
p(x) is the population in thousands for a species of fish
x is the number of years since 1997
Remember that p(x) is in thousands
so
If the population reach 66,530 fish
then
the value of p(x) is equal to
p(x)=66.53
substitute in the quadratic equation



Solve the quadratic equation by graphing
The solution is x=10 years
see the attached figure
therefore
Find the year
Adds 10 years to 1997
1997+10=2007
A and B are correct for this one!!