Me with number one what’s the answer ?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

Solve this problem! extra ! 3025/5.5 = a/90.75 / = fraction

The price of a dozen eggs was $1.63. suppose the price increases m dollars per dozen and then the price decreases $0.12 per dozen. which expression represents the current price of eggs after the two price changes?