What is the value of the expression [-7]+[-4]? WILL GIVE BRAINLIEST ALSO 20 POINTS NEED HELP ASAP

If there is no real number solution to the quadratic equation x^2+2x+c=0 what is a possible value of c? 1 -2 0 3

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks