Describe whether each of the following is linear or not linear. in each case, explain your answer.

a. 3x+4y+2=0

b. x= 2,4,6,8 y=1,5,15,30

c. you have a secret that you tell to one person. every hour, each of the people that know the secret tells one person. the number of people who know is n, and t is the number of hours since you told the first person. is n a linear function of t?

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!

answer: your answer is c

step-by-step explanation: