A car travels 39 miles in time T A bike travels 18 miles in the same time T

The car moves 28 mph faster than the bike.

Find the Time T and the speed of the bike and the speed of the car

the answer is d

step-by-step explanation:

99

step-by-step explanation:

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

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.