Car Travels In this new car your family can drive on a trip at 50 miles per hour. The
distance D you go is a of how many hours T you drive
function:d=50T if you drive for 125 miles how long would it take you to drive

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.

Find the maximum value of p= 4x + 5y subject to the following constraints :

Do one of the following, as appropriate: (a) find the critical value z subscript alpha divided by 2 , (b) find the critical value t subscript alpha divided by 2 . 99%; nequals 17; sigma is unknown; population appears to be normally distributed.