Find the exact value for Tan 675 degrees

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

Asequence is defined recursively by the formula  f(n  +  1)  =  f(n)  +  3 . the first term of the sequence is  –4. what is the next term in the sequence? –7–117

Which of the following expressions is equal to 2x^2+8