Use the quadratic equation x2+6x+9=0 to answer the questions.

a: what is the discriminant of the quadratic equation?

b: based on the discriminant, which statement about the number and type of solutions to the equation is correct?

select one answer choice for part a, and select one answer choice for part b.

b: the equation has one repeated real solution.
b: the equation has two real solutions.
a: −30
a: −25
a: 0
a: 25
b: the equation has one repeated real solution.

Select all the correct answers.natalie buys a new car. in the first month, the odometer on the car records 800 miles. from past experience, she expects to drive 900 miles per monthselect all the functions that can be used to find the number of miles, f(n), recorded on the odometer after n months.of(n) = 800n + 100f(n) = 9001 - 100f(n) = 900n + 800(1) = 800; }(n) = f(n - 1) + 900, for n > 2f(1) = 800; 1(n) = f(n − 1) + 100, for n > 2(1) = 900; }(n) = f(n - 1) + 800, for n > 2

The table represents a function. what is f(-2)? a.-3 b. -1 c.1 d.3

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels