10. Andrew Galen had a checking balance of $1.39 Monday morning. His net wages of $512.89 were transferred by direct deposit at 11:00 a. m. to his checking
account. Later that evening, Andrew made online payments of $3.24, $18.30,
$38.96, $100.34, and $314.78. His goal is to keep only a $10 balance in his
checking account and have most of his money in savings. How much money
was available in Andrew's checking account to be transferred to savings after
all the transactions were completed?

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.

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?

Acircus act has 3 times as many elephants as acrobats. jorge noticed that all together there were 56 legs in the circus ring. how many elephants were in the show?