Penny is counting the days until her grandma comes to visit. there are 98 days left. how many weeks are left until penny's grandma comes to visit? (1 week = 7 days)

Which of the following expressions is equal to 2x^2+8

Due to a packaging error, 4 cans labeled diet soda were accidentally filled with regular soda and placed in a 12 pack carton of diet soda. two cans were randomly selected from this 12 pack. what is the probability that both cans were regular soda?

If the altitude is drawn to the hypotenuse of a right triangle, then the two triangles formed are similar to the original triangle and to each other. which set of triangles shows the similar triangles created by the altitude in the diagram?