At practice, Joy does twice as many jumping jacks as Bill, and she also does 50 sit-ups. Joy does 112 exercises in total. The equation 2x + 50 = 112 describes this situation. What does the variable x represent?

To keep cylindrical tanks from tipping over, a designer is planning to enlarge the original area of the base by 50%. the new tank should have the same volume as the original. how should the designer change the height of the tank? a: make it 50% taller than the height of the original tank. b: make it 6623% taller than the height of the original tank c: make it 3313% shorter than the height of the original tank d: make it 50% shorter than the height of the original tank.

Diana‘s coin bank contains 500 nickels and dimes the total value of the coins is $40 how many times does she have

What are the solutions of the given equation 2x^2+9x+10=0