Four brothers (andrew, brad, carl, and david) leave their parents' house at the same time and take the highway to their respective homes. the graph shows how long andrew, brad and carl drove and how far each had to travel on his highway to reach his home.
david drove 1.75 hours.
the distance he drove can be modeled by the equation d=40t where d = distance and t = time.
which brother traveled at the greatest speed?
a. andrew
b. brad
c. carl
d. david

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?

Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm2. what is the area of the second triangle?

:i need some real : a store sells shirts to the public at one pricing scale and wholesale at another pricing scale. the tables below describe the cost, y, of x shirts. (after tables) how do the slopes of the lines created by each table compare? the slope of the public table is 3/4 of the slope of the wholesale table.the slope of the wholesale table is 3/4 of the slope of the public table.the slope of the public table is 12 times greater than the slope of the wholesale table.the slope of the wholesale table is 12 times greater than the slope of the public table.