The Taxi fare in Edmonton is $15 for the first kilometer and $10 per kilometer for subsequent distance covered. If the distance is represented as x, and the fare is represented as y, find the linear equation for this relationship.
ABCD is a square with each side measuring 64cm. M is a point on CB such that CM=16cm. If N is a variable point on the diagonal DB, find the least value of CN+MN.
The chords AB and CD of a circle are perpendicular to each other. If radius of the circle is 7 cm and length of the arc BPC is 12 cm, find the length of arc AQD. (Assume π =