Which expression represents the area of the shaded rectangle?

What are the triple angle formulas? is it related to double angle identities?

Give the domain and range. a. domain: {0, 2, 4}, range: {2, 6, 10} b. domain: {0}, range: {2} c. domain: {2, 6, 10}, range: {0, 2, 4} d. domain: {2}, range: {0}

Who can me with this algebra for your guys.