The stopping distance, d ( in feet) for a car moving at a velocity (speed) v miles per hour is modeled by the equation: d = 0.04 v squared + 1.1 v
What is the stopping distance for a velocity of 40 miles per hour?
a.
108 ft
c.
120 ft
b.
72 ft
d.
138 ft

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent.the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244