Are techniques that use models, constructed from past data, to predict the future or to ascertain the impact of one variable on another. a. descriptive b. predictive c. prescriptive d. simulation

Estimate each quotient. show the compatible numbers you use. 0.00438 ÷ 0.00072

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

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)