Your friend surveyed 100 people who took either vitamin C, zinc, or Echinacea supplements to prevent getting a cold. The participants

were asked if they had a cold or no cold in the last 30 days.

no cold

cold

total

vitamin C

41

zinc

12

5

17

echinacea

21

total

26

100

What ratio of people in the survey took Echinacea?

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?

If you bought a stock last year for a price of $124, and it has gone down 5.6% since then, how much is the stock worth now, to the nearest tenth?

Explain how you would contruct a perpendicular bisector of wx using a compass and a straightedge.