RRB Government Jobs Exams

In the quadratic equation x^2 - x + c = 0, c represents an unknown constant. If x = -3 is one of the solutions to this equation, what is the value of c?

Read Solution (Total 0)

RRB Other Question

Southern Phone Company is promoting a new cell phone service plan: a customer can make up to 500 minutes of calls each month for $39.99. If the number of minutes used in a month exceeds 500, then the function c = 0.40(m - 500) + 39.99 describes the monthly charge, c, in dollars in terms of m, the total number of minutes used. Which of the following statements best describes this function? Which of the following is not a correct description of the graph of the function y - 2x - 7?
a) The graph of the function contains the point (-2, -3), and when the value of x increases by 1 unit, the value of y decreases by 2 units.
b) The graph of the function contains the points (-1, -5), (2, -11), and (4, -15).
c) The graph of the function is a line that passes through the point (0, -7) with a slope of -2.
d) The graph of the function contains the points (0, -7), (1, -9), and (3, -1).