Z=7f/r+4 , solve for r

              7f

     r =  -  4

                z

Step-by-step explanation:

I will assume that you meant:

         7f

z =

        r + 4

Solve for r.  Start by interchanging z and (r + 4):

               7f

r + 4 =

                z

Now subtract 4 from both sides.  This isolates r:

              7f

     r = - 4

                z

21 i watched a 3 hr vid explaining it

step-by-step explanation:

du what else would it be

brainliest

option 2 is correct.

step-by-step explanation:

we are given two inequality equation

x+y> 5 and -3x+2y< -2

first we draw the graph of both function using t-table method

equation: x+y> 5

for x=0, y=5

for x=-5, y=0

table:

x   :   0     5

y   :   5     0

test point (0,0) , 0> 5

false

equation: -3x+2y< -2

for x=0, y=-1

for x=2, y=4

table:

x   :   0     2

y   : -1       4

test point (0,0) , 0< -2

true

now we draw the graph. see the attachment for graph.

common region would be solution set.

option 2 is correct.