Using the following system of inequalities find the maximum value of f(x, y) = 3x + 4y

x≥0

y≥0

3x+2y≤18

6x+7y≤42

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.