Can someone explain how to find the answer for this pre-calculus question?

Select the best answer.

cot A sin 2A=

a. 1 + cosA

b. 1 + sin2A

c. 1 + cos2A

What is the median for the set of data? 6,7,10,12,12,13

Simplify square root of 64x squared

Write a formula for the world population and sketch the graph. In 2007, the world's population reached 6.7 billion was increasing at a rate of 1.2% per year. Assume that the growth rate remains constant.

Which of the following represents the factorization of the binomial below? 25x2 - 64y2 A. (5x - 8y) (5x-8y) B. (5x + 8y) (5x + 8y) C. (5x - y) (x + 8y) D. (5x - 87) (5x + 8y)

The attendance at the school concert was 578. Admission was $2.00 for adults and $1.50 for students. The receipts were $985.00. How man adults and how man students attended the concert?

The distance from city A to city B is 3 times father than the distance between city B and city C. The total distance from city A to city B to city C is 50 miles. How far is it from city A to city B?

Which statements describe the function f (x) = 2x+24/x^2+4x-96? Check all that apply. f (x) has a vertical asymptote at x = 8. f (x) has a vertical asymptote at x = 12. f (x) has a hole at x = - 12. f (x) has a horizontal asymptote at y = 0.

Which estimate of 7/10*16 uses a benchmark fractions? A. 1 x 16 = 16 B. 7/10 x 20 = 14 C. 3/4 x 16 = 12 D. 7/10 x 10 7

Which number is a rational number? √25 √32 √50 √63

Need hep. solve 6x-1=5