The square pyramid pictured below has a surface area of _. A. 120 m 2
B. 189 m 2
C. 144 m 2
D. 126 m 2

What is the missing constant term in the perfect square that starts with x^2 -20x

Which of the following scenarios demonstrates an exponential decay

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?