A building casts a shadow 5 ft long. At the same time, the shadow cast by a vertical yardstick is 5 ft long. How tall is the building?

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?

Bring the fraction a/a-4 to a denominator of 16-a^2

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3