Yo please help me! First image answer choices for all questions

2nd image the questions

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.

Ahealth-food producer has 250 samples of a new snack to distribute in the mall. the producer has to keep at least 50 samples for display in the health food for the product launch. how long will the samples last if consumers are taking the samples at a rate of 25 every hour

Which equation can be used to determine the reference angle, r, if 0=7 pi/12?