Sang-Jin has only quarters and nickels in her piggy bank. She has 66 coins in the bank with a value of $11.50. How many quarters are in Sang-Jin’s piggy bank? Enter your answer in the box.

The $x$-intercepts of the parabola $y = x^2 + bx + c$ are $(-3,0)$ and $(5,0).$ find the equation of the parabola, and submit your answer in $y = ax^2 + bx + c$ form.

Is the orthocenter of a triangle on the inside ?

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?