A paper airplane thrown off a balcony 70 feet above the ground descends at a rate of 2 feet per second
The inequality 2x + 70 < 6 shows when the airplane will be less than 6
feet above the ground,
Solve this inequality for x, the time when the airplane will be less than 6
feet above the ground.
A. x > 38; After more than 38 seconds
B. x > 30, After more than 30 seconds
CX32, Before 32 seconds
D. x > 32, After more than 32 seconds

What is the volume of this square pyramid?

Question 10jur's car can travel 340 miles on 12 gallons. jack's car can travel 390 miles on16 gallons. which person has the best mileage (miles per gallon) and what istheir mileage?

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.