I need help please The problem is:To evaluate the following expression, what step should you do first?
7×(4+16)÷4-2

Select the lengths in centimeters that would form a right triangle

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.

Solve 3x-18=2y and 5x-6y=6 by elimination show work