When n = 2, which of the expressions below will be greater than 30? Select all that apply. A)7n2–(3n+4)
B)5(3+n3)
C)n4⋅2
D)(7n−2n)×4

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

Don't know how to find x given these segment lengths

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3