Write an algebraic expression that models the situation. Jenny had $150, but she is spending $5 per week.

Acircle has a circumference of 28.36 units what is the diameter of the circle

Find the ratios of the corresponding sides

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?