Chemistry Biology
Physics
Total
Male
12
14
16
42
Female
16
20
12
48
Total
28
34
28
90
a) How many people are male OR study Biology OR both?
b)
What is the probability that any person is male OR
studies Biology OR both?

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?

James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 tokens, and the game costs the same number of tokens each time. the number t of tokens james has is a function of g, the number of games he plays. write the function’s formula? t=

Sawsan recorded the favorite sport of students at her school. she surveyed 200 students. how many students chose tennis?