Please help The graph shows the distance, in miles, that Anders traveled over a period of nine hours.

Use the graph to determine the constant of proportionality between the number of miles traveled and the number of hours traveled.
A. 60
B. 65
C. 130
D. 585

Which formula gives the area of a triangle? a=1/2(b+h)

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

Solve 3x-18=2y and 5x-6y=6 by elimination show work