Mary and Greta live 21 miles apart. At 1:00 P. M. they start riding their bicycles toward each other and meet a
1:45 P. M. If Greta's average speed is 4 miles per hour
faster than Mary's average speed, find Greta's average
speed.

answer: domain and range mean all possible values of x and y that could be substituted to the inequality. a solution means all possible values that make the inequality statement true. so while the range is still all real numbers, the solution is the shaded area, for which y will always be greater than the line of the function.

i would say b) is your answer

sorry if im wrong

step-by-step explanation: