I hate MaTH so much is it just me or other people

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64

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?

Given: m zade = 60° and m2cdf = (3x + 15) prove: x = 15