Shelly y Terrence ganaron puntos en un juego al completar varias tareas. Shelly completo x tareas y obtuvo 90 puntos en cada una. La siguiente expresión muestra los puntos totales de Terrence en el juego
90X-20

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?