What is the circumference and radius of a circle with a diameter of eight and a half inches?

Steve earns $8 per hour his older brother earns $2 more per hour than steve what is the ratio of the money steve earns in an hour to the money of his brother earns in an hour.

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Twelve less than a number is at most 20