Grace read 1 3 of a book in the morning, and she read some more at night. By the end of the day, she still had 2 5 of the book left to read. How much of the book did Grace read at night?

What signals you that factoring by grouping is the best method to use when factoring a problem?

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?