Marshall learned to play a total of 4 pieces over the course of 2 weeks of piano lessons. In all, how many weeks of piano lessons will Marshall need before he will be able to play a total of 16 pieces? Assume the relationship is directly proportional.

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?

Estimate the time en route from majors airport (area 1) to winnsboro airport (area 2). the wind is from 340° at 12 knots and the true airspeed is 136 knots. magnetic variation is 5° east.