Which expression is equivalent to the perimeter expression? O 5+4x
O 10+4x
O 5+5x
O 10+5x

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?

Solve for b. ab + c= d b= a + old ob=allc-ch b= (d-c/a

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?