Factor the expression completely over the complex numbers. y^4+14y^2+49
plz asap

What is the approximate value of  x  in the equation below.–3.396–0.7080.3040.955

Which shows the first equation written in slope-intercept form? 1/2 (2y + 10) = 7x

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?