A student received a coupon for ​19% off the total purchase price at a clothing store. Let z be the original price of the purchase. Use the expression below for the new price of the purchase. Write an equivalent expression by combining like terms. z-0.19z=

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2

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?

Which of the following choices gives you a slope of 3?