Select the equation that is the inverse of the given function.
f(x) = * = 3
.
f-1(x) = 5x + 15
f-1(x) = 5x + 3
f-1(x) = 3x - 5
-1(x) = x
done

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?