If (x − 3) is a factor of the polynomial function f(x) = 4x2 − 5x − 21, which of the following is another factor?
(7x − 4)
(7x + 4)
(4x − 7)
(4x + 7)

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

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?

If a || b and e || f , what if the value of y ?