If the the discriminant of a quadratic equation is greater then 0, which of the following is true

a. it has two complex solutions
b. it has one real solution
c. it has two real solutions

What kinds of numbers make up the set of numbers called the real numbers? give examples when you explain a number type. there are a limited set of types of numbers, but an unlimited number of examples of these numbers.

Me. i can't figure out this question. give an explanation too. .

Emily is entering a bicycle race for charity. her mother pledges $0.90 for every 0.75 mile she bikes. if emily bikes 18 miles, how much will her mother donate?