Trigonometry
Reference Angles and Triangles
The line y=3x creates an acute angle θ when it crosses the x – axis. Find the exact value of sec θ?

In the equations, a and b represent the price per night for a room in hotel a and hotel b, respectively, w weeks after september 1 last autumn. what was the price per night in hotel a when it was equal to the price per night in hotel b? a = 240 − 20w b = 320 − 30w

In which form is the following function written? y = - 2(x – 3)(x + 5)

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers