Of the 64 students on a field trip to a museum, five-eighths brought their lunch. How many students brought their own lunch? A. 39
B. 46
C. 40
D. 38

Sketch one cycle if the cosine function y=2cos2theta

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

6x + 3y = -6 2x + y = -2 a. x = 0, y = -2 b. infinite solutions c. x = -1, y = 0 d. no solution