An oil slick is expanding as a circle. The radius of the circle is initially 2 meters and increases at the rate of 21 meters per day. Express the area of the circle as a function of t, the number of days elapsed. The area of a circle is A(r)=πr2.

Acabinmaker buys 3.5 liters of oat varnish the varnish cost $4.95 per liter what is the total cost of 3.5 liters

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.

Flvs question 3 exam: 04.10 segment one exam part two what is the measure of angle x? picture is shown