How do i figure this out The fuel efficiency of a car depends on the speed at which it is driven. For example,
consider Kit’s Volvo. When it is driven at r miles per hour, it gets m = 32 − 0.2|r − 55|
miles per gallon. Graph m versus r, for 0 < r ≤ 80. Notice that this graph has a vertex.
What are its coordinates?

You and a friend race across a field to a fence and back. your friend has a 50-meter head start. the equations shown represent you and your friend's distances dd (in meters) from the fence tt seconds after the race begins. find the time at which you catch up to your friend. you: d=∣−5t+100∣d=∣−5t+100∣ your friend: d=∣−313t+50∣∣

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab