What percent of 30 is 75

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.

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a