Doug set his watch 15 seconds behind, and it falls behind another 1 second everyday. How many days has it been since Doug last set his watch if the watch is 18 seconds behind? Days. (My Little Brother wants a short answer) Help ASAP!

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

Nikolas calculated the volume of the prism. his work is shown below.

Someone answer this asap for the length, in feet, of a rectangular rug is represented by the expression 5x² + 2x. the width, in feet, is represented by the expression 3x². which expression represents the perimeter, in feet, of the rug? a. 8x² + 2x b. 8x² + 4x c. 16x² + 2x d. 16x² + 4x