If a(x) = 2x - 4 and b(x) = x + 2, which of the following expressions produces a quadratic function? (ab)(x) (a/b) (x) (a – b)(x) (a + b)(x)

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

Why is x= 4 a solution to the proportion 14/x 56/1 6

Change negative exponents to positive. then solve. round to four decimal places