PRE CALC HELP 50 PTS

B

Step-by-step explanation:

We want to solve the inequality:

First, we can add sec(x/3) to both sides:

Subtracting 4 from both sides yields:

And dividing both sides by 2 yields:

Therefore, we can graph the following two functions:

Where our solutions will be all the intervals where y = sec(x/3) is above the line y = -1.

B) is the right answer.

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

cant

step-by-step explanation: there is no picture