What is the value of this expression 4/2-^2

Issof claims that the scale factor is 1/2. which statement about his claim is correct

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.