G(f(1))-f(-4) if f(x)=3x+2 and g(x)=x^(2)-x

How do you find the area of a triangle

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?

Ratio of circumference to diameter example plz i need to now what it looks like.