Using grouping, factor 2 a2 - 13a + 21. You must show your work to receive credit!
y = (2a + 7)(a + 3)
y = (2a + 7)(a − 3)
y = (2a – 7)(a + 3)

Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 25002500 grams and a standard deviation of 800800 grams while babies born after a gestation period of 40 weeks have a mean weight of 27002700 grams and a standard deviation of 385385 grams. if a 3232-week gestation period baby weighs 21252125 grams and a 4040-week gestation period baby weighs 23252325 grams, find the corresponding z-scores. which baby weighs lessless relative to the gestation period?

700 miles the train takes 5 hours to a travel the distance at what unit rate is the train traveling?

The graph is supposed to show f(x) = 3 sin (x/4+1) - 1/2. which of the following are correctly represented in the graph? select two of the following that apply.