Jose gets his hair cut for $12. He gives his barber a 15% tip. How much does he give the barber for a tip?
(Plz help me)

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?