A radio plays 16 commercials in an hour. A commercial is either 30-seconds long or 60-seconds long. The total commercial time is 13 minutes. If x represents a 30-second commercial and y is a 60-second commercial, which equations would you enter into a graphing calculator to find how many of each type of commercial is played? Check all that apply.
x + y = 13
x + y = 16
0.5x + y = 13
0.5x + y = 16
0.5x + y = 29

answer:   rotate 270° clockwise about (7, 1) and reflect across the line x = 7

step-by-step explanation:

because i took test

just get this app called photo math it should be able to do those

answer: h=5.6 i don't really know how to put into words, so i though i would let you do that. i hope i was able to some

step-by-step explanation:

18 = 6(h)+1/2

18 = 6h+1/2

18-1 = 6h/2

17 = 3h

17/3 = h

h = 5.6

the rate of change is 25