Find the gcf of 18a and 20ab (and explain why your answer is what it is)

2a

explain:

18 = 2 * 3³

20 = 2² * 5

6 = 2 *3

now I find the gcf of a, ab, ab

a = a

ab = a * b

Gcf = a

so the solution is:

2a

b. x + 1

step-by-step explanation:

i'am smart

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