Pls answer it very fast

Answer is (d) 3

Step-by-step explanation:

(7/12)^-4 + (7/12)^3x = (7/12)^5

(7/12)^(-4+3x) = (7/12)^5

-4+3x = 5 [divided by 7/12 everypart]

3x =5+4

3x=9

x=9/3

x=3

5.5

step-by-step explanation:

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is