Using the following image, solve for x

Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 seconds

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

The quadratic function h(t)=-16.1t^2+150 choose the graph representation