Please help me, I cannot figure this problem out.
A store is having a sale on Trail mix and jelly beans. For 2 pounds of trail mix and 6 pounds of jelly beans, the cost is $20. For 5 pounds of trail mix and 3 pounds of jelly beans, the total cost is $23. Find the cost for each pound of trail mix and each pound of jelly beans.

In the past, professional baseball was played at the astrodome in houston, texas. the astrodome has a maximum height of 63.4 m. the height of a baseball t seconds after it is hit straight up in the air with a velocity of 45 ft/s is given by h = -9.8t2 + 45t + 1. will a baseball hit straight up with this velocity hit the roof of the astrodome? use the discriminant to explain your answer.

Find the missing factor. 7s2 + 25s + 12 = (s + 3)( ).

Determine if the solution set for the system of equations shown is the empty set, contains one point or is infinite. x + y = 5 x + y = 7 {} 1 solution infinite