The number of pages that allen, kevin, roneisha, and ben can read in a day is shown below.

allen read 15% of his 56-page book.
kevin read 12% of his 64-page book.
roneisha read 16% of his 42-page book.
ben read 10% of his 72-page book.

who can read the greatest number of pages in a day?

Abarbecue sold 26 hamburgers and hot dogs. hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. if the barbecue made $70 in sales, determine and state the number of hot dogs sold.

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

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.