The price of a set of headphones that regularly sells for $99 increases by 30 percent. What is the new price for the headphones? A $128.70 B $92.40 C $70

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?

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

Formulate alisha has a number in mind. if she adds three to her number the result is less than five. use this information to write and solve an inequality about alisha's number. then graph the solution set.