If f(x) varies directly with x and f(x)=120 when x=30, find the value of f(x) when x=4. Round your final answer to the nearest whole number. Please help me-

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

Add, subtract, multiply, or divide as indicated. list any restrictions for the variable(s) and simplify the answers when possible. 1) x-2 / x+5 + 3x / 2x-1 2) x+6 / x-6 - x^2 / x+6 3) x+9 / x-4 + x+2 / x^2-11x+28 4) x / x^2-64 + 11 / 2x^2+11x-40 5) 5 / x + 11 / x-3 - x-4 / x^2+2x-15

Given: ab ≅ bc and ao ≅ oc ok − angle bisector of ∠boc find: m∠aok