The width of a rectangle measures (6.1r−5.9s) centimeters, and its length measures (8.8r+5.8s) centimeters. Which expression represents the perimeter, in centimeters, of the rectangle?

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

Which of the following is best modeled using a linear equation y=ax+b, where a is less than 0?