John is 23 years old and rents a car for 4 days, from Thursday through Sunday. The cost of the car rental is $27.99 with unlimited miles, but the cost of the rental is
42% higher on Saturday and Sunday. The company charges a $40 fee for renters
younger than 25. How much will it cost John to rent the car?
$206.96
$151.96
$175.48
$135.48

The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9

Why is causation so much more difficult to prove than correlation?

If p(x) is the total value of the production when there are x workers in a plant, then the average productivity of the workforce at the plant is a(x) = p(x) x . (a) find a'(x). a'(x) = xp'(x) − p(x) x a'(x) = xp'(x) − p(x) x2 a'(x) = p'(x) − p(x) x a'(x) = xp'(x) − p'(x) x2 a'(x) = p'(x) − xp(x) x2 why does the company want to hire more workers if a'(x) > 0? a'(x) > 0 ⇒ a(x) is ; that is, the average productivity as the size of the workforce increases. (b) if p'(x) is greater than the average productivity, which of the following must be true? p'(x) − xp(x) > 0 p'(x) − xp(x) < 0 xp'(x) − p'(x) > 0 xp'(x) − p(x) < 0 xp'(x) − p(x) > 0