Aconstruction crew is lengthening a road. let l be the total length of the road (in miles). let d be the number of days the crew has worked. suppose that l=2d+200 gives l as a function of d. the crew can work for at most 90 days.

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.