A car rental company offers two plans for renting a car: Plan A: 30 dollars per day and 19 cents per mile
Plan B: 50 dollars per day with free unlimited mileage

For what range of miles will plan B save you money?

To save money the mileage must be greater than
miles per day.

Give your answer accurate to at least one decimal place

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.

How many grams the dog will eat in 3 days?