There are 1,440 minutes in a day. on average, what percent of the day did those in the united states approximately spend watching tv? which is 282.
options are
15%
18%
20%
25%

20%

Step-by-step explanation:

282/1440=.195

round up to 20%

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18