Please help Prompt
Describe a way that you can remember the elements of the reflection matrices if you forget where the 1s, -1s, and 0s belong.

During a bike challenge riders have to collect various colored ribbons each 1/2 mile they collect a red ribbon each eighth mile they collect a green ribbon and each quarter mile they collect a blue ribbion wich colors of ribion will be collected at the 3/4 markrer

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2

Solve the triangle. a = 21°, c = 105°, c = 5