First one is C (18 sq units)
Second one is A (12sq2 units)
If we factorize the expression

We will get

Hope I helped!
Answer:
$890.4
Step-by-step explanation:
840 + .06(840)
840 + 50.4
890.4
Answer:
see below. The solution is the doubly-shaded area.
Step-by-step explanation:
Each boundary line will be dashed, because the "or equal to" case is <em>not included</em>. Each shaded area will be above the corresponding boundary line because the comparison symbol is y > .... That is, only y-values greater than (above) those in the boundary line are part of the solution.
Of course, the boundary lines are graphed in the usual way. Each crosses the y-axis at the value of the constant in its equation. Each has a slope (rise/run) that is the value of the x-coefficient in the equation.