Express cos^2 x in terms of cos2x. Hence, express f (x) = 6cos^2 x - 4sin 2x in the form R cos (2x + Y degrees) + p where R, y and p are constants. Find the maxium and minimum values of f (x) and sketch its graph in the domain - 180 < = x < = 360

Which function does this graph correspond to?

What is the perimeter of the regular pentagon when the sides are all 8 in. long?

Find the sum of all integers between - 203 and 204

A certain candle is designed to last nine hours. However, depending on the wind, air bubbles in the wax, the quality of the wax, and the number of times the candle is re-lit, the actual burning time (in hours) is a uniform random variable with a = 5.

A rectangle has a length of 8 centimeters and a width of 3 centimeters. Find the perimeter. a. 11 cm c. 22 cm b. 17 cm d. 46 cm

Two numbers are in the ratio 7:8. Find the numbers if their sum is 45.

Is y=9x+3 proportional or non-proportion and why?

A video rental company offers a plan that includes a membership fee of $9 and charges $1 for every DVD borrowed. They also offer a second plan, that costs $44 per month for unlimited DVD rentals.

The area of the two triangles is given by the functions: Area of Triangle A: x2 + x Area of Triangle B: x2 - 3x Which function represents the sum of the areas of the two triangles?

Movies are on sale for 1/4 the original price. If the original price is $20, which expression gives the sale price?