find the equation of the least-squares regression line y and the linear correlation coefficient r for the given data. round the constants, a, b, and r, to the nearest hundredth. {( 1,3),(5,11),(7,14),(9,18),(11,22)}

Factor the polynomial 8y^2 - 72 btw "^" means exponent

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?