I need help What value would you put in the parenthesis?
c² + 8c + 10 = 0
c² + 8c _= -10
c² + 8c + 16 -10 + 16
(c² + _)² = 6

Y= 4x + 3 y = - 1 4 x - 5 what is the best description for the lines represented by the equations?

The half-life of a certain material is 0.002 second. approximately how much of a 14-gram sample will be left after 0.004 second? a. 12 grams b. 3.5 grams c. 0.06 gram d. 7 grams

In a quadratic function of the form ax^2+bx+c, which of the following is not true? a. the y-intercept is c. b. if a is positive, the parabola opens up. c. the vertex has an x-coordinate of -b/2a. d. the axis of symmetry is the line y=-b/2a.