3 Martin can run 1 mile in 7 minutes. What valid proportions can be written from this information? Check all that apply-
13
0 -
21
10
73
0 17 -
21
7 21
07-
3
0 -
21

A and D or 1/7 = 3/21

7/1 = 21/3

Step-by-step explanation:

]

you probably already have the answer but anyways it's b. 15.0

step-by-step explanation:

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.