How large a wave would be generated from a 50 mph wind, with a 1420 mile fetch, over a 69 hour period be?

a.) 57
b.) 67
c.) 87
d.) 97

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.

What are the solutions of the following system? y=-2x^2 y=x-2

At store a, erasers are sold individually. the cost y of x erasers is represented by the equation y=0.75x. the costs of erasers at store b are shown in the graph.