The cost of 9 scarves is $87.75. What is the unit price?

If a and b are the measures of two first quadrant angles and sin a = 4/9 and sin b = 2/5 find sin(a+b).

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

These box plots show the number of electoral votes one by democratic and republican presidential candidates for the elections from 1984 through 2012. which statement best compares the spread of the data sets