You deposit $300 into an investment account that earns 12% annual interest compounded quarterly. The graph shows the balance of the savings accounts over time. A. Write the functions that represent the balances of the accounts after t years. Round the growth factor to the nearest hundredth, if necessary.

the points
(1 , 324) (2 , 349.92) (3 , 377.93)
please I need a serious answer
The function for the investment account y=
The function for the savings account y=

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

Afarmer sells 9.5 kilograms of apples and pears at the farmer's market. 4/5 of the weight is the apples and the rest is the pears. how many kilograms of pears did she sell at the farmers market

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.