A railroad crew can lay 6 miles of track each day. They need to lay 168 miles of track. The length, L (in miles), that is left to lay after d is given by the following function. L(d)=168-6d How many days will it take the crew to lay all the track? How many miles of track does the crew have left to lay after 17 days?

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.

Someone answer asap for ! a ball is rolled down a ramp. the height, f(x), in meters, of the ball x seconds after it is released is modeled by the function f(x) = x²- 10x + 25 for all values of x from 0 to 5. which statement about the ball is true? a. the maximum height of the ball is 5 meters b. the height of the ball increases from 0 to 5 meters above the ground. c. the ball has traveled 5 meters when it reaches the bottom of the ramp. d. the ball has been traveling for 5 seconds when it reaches the bottom of the ramp

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1