Which statement is correct?

a.) 3 < < 4
b.) 4 < < 5
c.) 5 < < 6
d.) 6 < < 7

Given: △abc, ab=15, bd=9 ad ⊥ bc , m∠c=30°. find: the perimeter of the triangle.

Nine more than four times a number is the same as one less than twice the number. find the number?

Which of the following statements are true about the graph of f (x) = 1/4 coz ( x + π/3) - 1? select two of the following that apply.