Two cranes are lifting building materials on top of a roof. Crane A lifts a steel
beam all the way to the top of the roof in 30 seconds, while crane B lifts an
identical beam three-quarters of the way up to the roof in 30 seconds too.
Which of the following statements is true?

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice

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.

you would 18 *0.25 = 4.5