la suma de las edades de wilmer y alexandra es 40 y la diferencia de sus edades es 10 determina las edades de cada uno de ellos si alexandra es la menor

What situation is an example of an observational study

Bobby bought 1.12 pounds of turkey at a cost of 2.50 per pound. carla bought 1.4 pounds of turkey at a cost of 2.20 per pound. who spent more and by much?

Find the zeros of each function. f(x) = 6x^2 - 7x - 20