Writing Formulas

What is the correct equation for finding distance?

• Distance = rate x time

• Distance = cost x time

• Distance = rate x number of items

• Distance = cost per item x number of items

You fly at q km/h for k hours. What is your distance?

• q + k

• q - k

• qk

• q/k

You paddle for p hours at x mph. What is your distance?

• p + x

• px

• p/x

• p - x

What is the correct equation for cost?

• Cost = rate x time

• Cost = rate x number of items

• Cost = time x distance

• Cost = price per item x number of items

You buy 2 tires at t dollars each. What is the cost?

• 24t

• 2 + t

• 2t

• 2 - t

You buy r magazines at y cents each. What is the cost?

• 64

• r

• 2ry

• ry

You buy something for b dollars. You sell it for s dollars. You make a profit. How much is your profit?

• s - b

• s + b

• sb

• s/b

You buy 2 sweaters at u dollars each. How much does it cost?

• 4

• 2u

• 5u

• 2 + u

You buy 3 shirts at w dollars each. How much does it cost?

• 3 + w

• 3 - w

• 3w

• 9

You buy 2 sweaters at u dollars each. You also buy 3 shirts at w dollars each. How much does it cost?

• 2u3w

• 6uw

• 2u + 3w

• 23 + wu