Dan needs to buy some pencils. Brand A has a pack of 12 pencils for $3.29. Brand B has a pack of 28 pencils for $8.99 . Find the unit price for each brand. Then state which brand is the better buy based on the unit price. Round your answers to the nearest cent.

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)