Use the number line to find the ratio ac/cf simplify the ratio
a. 8/20
b 2/5
c 8/12
d 2/3

I’m confused on how to work the pie charts

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?

What is the solution to the system of equations? y=1.5-3 y=-x