Our class voted for class treasurer. there are 20 students in our class. after voting for class treasurer, billy received 3 times more votes than keeton. how many votes did billy receive?
a. 5 votes
b. 10 votes
c. 15 votes
d. 20 votes

Let Keeton receive    x    votes.

Billy received 3 times more =  3*x = 3x

If all the 20 students voted, the total votes would be equal to x.

3x + x = 20

4x = 20

x = 20/4

x = 5

Since Billy received 3x =  3*5 = 15

Option C.

First, think of what you know. you know that the number t the end of the equation will need to be subtracted because it is the money he lost from buying the lawn mower. and your first two weeks have negative profit, so that tells you that c and d are wrong. now you can plug any of the weeks into a and b to see which one works. i'll start with plugging week 1 into a.this isn't right because it says your answer for week one should be -90.so now we need to try the same thing with b.this one got you the right answer, (sometimes if you only check with one of the weeks multiple will work so you need to check with more of the weeks, but it worked out fine here)this means that b is the correct answer.let me know if you need more clarification. i hope this : )

The solution of the system of linear equations is b. (2,-3) because the solution is the poi (point of intersection)