6. (2 marks) You ask your neighbor to water a fragile plant while you are on a vacation. Without water, it will die with the probability of 0.8. With water, it will die with the probability of 0.15. You are 90% certain that your neighbor will remember to water the plant. (a) What is the probability that the plant will be alive when you return home

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

table 3 represents a direct variation function. : )

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two