In 1990, the price of a calculator was $12.50. In 2000, the price of a similar calculator was $8.90. What is the percent increase or decrease? Round to the nearest whole percent.

A. 40% increase
B. 40% decrease
C. 29% increase
D. 29% decrease

Can anyone me with 32,33,36,37,and 40.

Which of the following is a function? a.) {(-2, -4/5), (-1,-,,-1)} b.) {(-2,,1/,3/,1)} c.) {(-22)} d.) {(-21)}

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.