Speed, Time, and Di 1 a. An airplane flies with a constant speed of 640 miles per hour. How far can it travel in 2 1/2 hours​

Step-by-step explanation:

2½ hours × 640 miles/hour = 2½×640 miles = 1,600 miles

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.

150.6

all i did was i multiplied 5.02 by 30