Which best describes the range of the function f(x) = 2(1/4)^x after it has been reflected over the y-axis? a. all real numbers b. all real numbers less than zero c. all real numbers greater than zero d. all real numbers less than or equal to zero

The cost varies directly with the number of tickets purchased. it costs $145 for 10 people to attend a concert. a. what is the constant of proportionality (k)? b. write the direct variation equation. c. home much does it cost for 8 people? d. graph this situation. be sure to label each axis and give the graph a title.