(PLEASE HELP!) A 38-foot long escalator is being built to carry passengers to the 2nd floor of a building. The 2nd floor is 20 feet above the 1st floor.

Part A:
Approximately how far should the escalator's base be from a point directly under the top of the escalator?

Part B:
What is the approximate angle of elevation that the escalator must be built at?

Jackie bought a bag of oranges. she used 3/8 of the oranges to make orange juice. she used 1/3 of the oranges to make a fruit salad. she put 1/8 of the oranges in a bowl on the table. she put 2/12 of the oranges in the refrigerator. a) jackie left more oranges on the table than she put in the refrigerator. b) jackie used fewer oranges to make orange juice than she left on the table. c) jackie put fewer oranges in the refrigerator than she used to make the fruit salad. eliminate d) jackie used more oranges to make a fruit salad than she used to make orange juice.

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Identify one charcteristic of exponential growth