On a road trip, sara’s brother drove 47.5% of the trip, and sara drove 80% of the remainder. if sara drove for 4 hours and 12 minutes, how long was the road trip?

An assembly consists of two mechanical components. suppose that the probabilities that the first and second components meet specifications are 0.87 and 0.84. assume that the components are independent. determine the probability mass function of the number of components in the assembly that meet specifications. x

Clara schumann is buying bagels for her coworkers, she buys a dozen bagels priced at $5.49 a dozen. the bakery's cost for making the bagels is $2.25 per dozen. what is the markup rate based on selling price on a dozen bagels?

Ineed in figuring out this problem.