A 13. The height of a ball thrown out of a
window 48 feet above the ground is
modeled by f(x) = (-8x-8)(2x - 6),
shown on the graph below, where x is
the number of seconds after the ball is
thrown and f(x) is the height of the ball
in feet.

Tyler enjoys the fish so much that after his birthday his family decides to take him to a famous aquarium a tank at the aquarium is similar to his tank with the scale factor of 8 how many times greater is the volume of the tank at the aquarium than the volume of tyler tank

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

Ineed with question three. i don't understand how i'm supposed to achieve 3 marks.