How to solve the quadratic equation by factoring x^{2}+4x+3=0

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?

For what values of a is the sum of the fractions 2a−1 / 4 and a−1 /3 positive?