3. A ball bounces and you are launching a rock to hit it. The equation of the ball bouncing is

y = - x2 + 4x + 4, and the launching of the rock equations was y=-2x+4. When would the rock hit the

ball?

If you laid one of each size bolt end to end, how long would the row of bolts be?

Three friends went out to lunch. They each started with the same amount of money and they each spent $9. They ended with a combined total of $18. How much money did each of them have to start? We need to figure out the equation with the answer.

At Hatfield Elementary School, there are 504 students in 7 classes. Each class has the same number of students. What is a good estimate of the number of students in each class?

Kamilah's weight has tripled since her first birthday. If w represents the amount Kamilah weighed on her first birthday, write an expression to show how much Kamilah weighs now.

Which expression is equal to (3 x 5) x 4

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.