If grades are weighted 60% tests, 20% quizzes and 20% final exam... What is your course grade if you have a 75 test average, a 80 quiz average and make a 60 on the final

73

Step-by-step explanation:

course grade = (75 x 0.6) + (80 x 0.2) + (60 x 0.2)  

                       =  45 + 16 + 12

                        = 73

y=-2.5x+12.5

step-by-step explanation:

5y=2x+10

y=0.4x+2

slope=-2.5

5=-2.5*3+b

b=12.5