STRUCTURE Refer to the expressions in Exercise 18. a. How many fireflies are caught each minute during the competition?
b. How many fireflies are caught before the competition starts?

Number 18:
a. 7m+19
b. Me/you/I caught more fireflies

21

step-by-step explanation:

11279

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!

to find the perimeter, you add up all the lengths of the sides. in this case you would have to add up 18+22+40+80 which equals 160.