The number of states in a certain country with voter ID laws increased approximately steadily from 4states2003 in12 to 2012 states in . Find the approximate rate of change of the number of states with voter ID laws.

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

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.

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.