Mike is checking his bank account for a few transactions that he completed. He deposited a $640 paycheck, withdrew $20 for dinner, paid his $110 electric bill and wrote a check to pay his rent of $520. How much money does Mike have in his bank account? $10 $640 $130 -$10

What is the value of the discriminant of the quadratic equation -2x = -8x + 8 and what does its value mean about thenumber of real number solutions the equation has?

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth

Which of the following is best modeled using a linear equation y=ax+b, where a is less than 0?