Use the method of completing the square to create an equation to x^2+ 8x= c. PLEASE HELP FAST!

Atown has a population of 12000 and grows at 3.5% every year. what will be the population after 7 years, to the nearest whole number?

Heather is riding a quadratic function that represents a parabola that touches but does not cross the x-axis at x=-6

Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.