Answer:
The sale price of a pair of shoes is $35.75
Step-by-step explanation:
28 questions answered.
40(2/5) is 16 questions.
40-16 is 24 questions left.
24(.5) is 12 questions.
16+12 gets you 28 questions.
We see that the slope of this line is so we plug this and the point into the point-slope form (note that there's nothing special about the point I picked; you can choose any point on the line):
This rearranges to the slope-intercept form