Item 4 An account earns simple interest.

$925 at 2% for 2.4 years

a. Find the interest earned.

$

b. Find the balance of the account.

$

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?

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.

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?