Arailroad 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 days 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 ?

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

What is the volume of a cone with a height of 6 cm in the radius of 2 cm

What is the volume of the cone to the nearest cubic millimeter? (use π  = 3.14) a) 46 mm3 b) 128 mm3 c) 183 mm3 d) 275 mm3 diameter = 5 mm height = 7 mm how do you do this problem step by step?