A construction crew is lengthening a road that originally measured 45 miles. The crew is adding one mile to the road each day. L
et L be the length (in miles) after D days of construction. Write an equation relating L to D. Then use this equation to find the length of the road after 21 days.
When you multiply a whole number by a fraction, multiply the whole number by the numerator ( top number) and then divide by the denominator (bottom number).
