Calculate the discriminant to determine the number of real roots.
y=x^2+3x+9
how many real roots does the equation have?
a) no real roots
b) no solution to the equation
c) one real root
d) two real roots

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?