Graded assignment
unit test, part 2: functions
answer the questions below. when you are finished, submit this assignment to your teacher by the due date for full credit.
total score: of 15 points
(score for question 1: of 5 points)
1. ana was washing dishes at the end of her shift at a restaurant. she washed 30 plates from 7: 30 to 7: 35. when she finishes washing all the plates, her shift will end.
(a) if she started washing plates at 7: 15 and ended at 7: 38, estimate how many plates she washed in total. explain your reasoning.
(b) write an equation to represent how many plates ana has left to wash at a particular time after her start at 7: 15. explain your reasoning.


(score for question 2: of 5 points)
2. a skydiver jumps from a plane from an altitude of 6000 ft. an observer on the ground measures the skydiver’s altitude at time t = 0 to be 4500 ft. the linear graph shows the skydiver’s altitude at various times during her descent.

(a) identify the y-intercept. how does the y-intercept relate to the skydiver’s position relative to the ground? explain.
(b) determine the slope of the line. according to the slope, is the skydiver ascending or descending and what is the rate of ascent or descent? explain.
(c) identify the x-intercept. what does the x-intercept mean in this context? explain.
(d) write an equation for the line.


(score for question 3: of 5 points)
3. manuel is riding his bike. the graph represents the distance manuel travels from his house over time.

describe what is happening as depicted in the graph.