What are the features of the quadratic function ƒ(x) = x2 + 10x + 21?

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

Me! 50 points! why does when we come home, our door is unlocked and there is grease on the door knob, me solve this , and i don't know what category this goes under

Enter the missing numbers in the boxes to complete the table of equivalent ratios. time (min) distance (km)? 36 9? 1512 ?