What did the scout say after fixing the little old lady's bicycle horn

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters .

Will mark the brainliest. paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each?

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