Jay earns $5.90 per hour working at the ice cream parlor after school. he needs at least $236 for a stereo system. choose the inequality that describes how many hours jay must work to buy the stereo system. a) 5.90x < 236 b) 5.90x > 236 c) 5.90 + x > 236 d) x 5.90 > 236

You purchased 8 pounds 10 ounces of candy from a candy shop. you want to split it equally among 3 classrooms at a local school.

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 tuition costs, c, for a local community college are modeled by c(h) = 250 + 200h, where h represents the number of credit hours taken. the local state university has tuition costs, s, modeled by the function s(h) = 300 + 180h. how many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.