Jennifer had $24 to spend on five pens. after buying them she had $14.how many did each pen cost? (show work)

Margie is practicing for an upcoming tennis tournament. her first serve is good 20 out of 30 times on average. margie wants to know the estimated probability that her first serve will be good at least four of the next six times she serves. how could she design a simulation for this scenario?

The graph of a quadratic function has a maximum at point (0, 5). the graph contains the point (2, 1). what is another point on the graph?

If the square of a positive integer is added to 2 times the integer the result is 48. find the integer.