Draw an involute of the of a circle when unwounding a rope. The circle diameter is 40mm. Also draw tangent and normal 100mm away from the centre of the circle.

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Suzanne began a trip with 18 1/2 gallons of gas in the gas tank of her car if she hughes 17 3/4 gallons on the trip how many gallons does she have left once she finish the trip