The ratio of walkers to riders was 5 to 3. if 315 were walkers, how many riders were there?

Kayla has a $500 budget for the school party.she paid $150 for the decorations.food will cost $5.50 per student. what inequality represents the number of students,s, that can attend the party?

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor

State one method by which you can recognize a perfect square trinomial.