F is a trigonometric function of the form f(x) = a cos(bx + c) + d. Below is the graph of f(x). The function has a maximum point at (7, 6) and a minimum point at (- 3pi/4,2)
find a formula for f(x)

Right triangle xyz has a right angle at vertex y and a hypotenuse that measures 24 cm. angle zxy measures 70º. what is the length of line segment xy? round to the nearest tenth. 8.2 cm 8.7 cm 22.6 m 25.5 cm