Ineed on my homework could anybody me?

That's alot

1.
1.25 times how many slices=40
divide both sides by 1.25
how  many slices=32

2.
tracy times x=marathon
5.25 times x=42
divide both sides by 5.25
x=8
8 times

3. payperhour times 5=35.75
divide by 5
payperhour=7.15

4.
pemdas
parenthsees first
4*3=12
now divide
120/12=10

5. m=5
make 2 and 2/3 into 8/3
5 times 8/3=40/3=13 and 1/3

6.
parenthasee first
2+8=10
10 times 4=40

7. 7 and 1/2=6 and 9/6
6 and 9/6-5/6=6 and 4/6=6 and 2/3

8. division first
20/2=10
60-10=50

9. 3.6/0.9=4

10. nth term is 2n+1
first one is 3, then 5 then 7,9,11

tenth term
2(10)+1
20+1
21

To tell if it is not a function you do a vertical line test. A vertical line test is when you draw a vertical line to test if the ordered pairs are a function or not.If the vertical line intersects the plotted points once it is a function and if the vertical line intersects the plotted points more than once it is not a function. An example of ordered pairs that are not a function is (2,6) and (2,8).