Which sources would be most useful in exploring the issue of higher education costs?
plans of action
Ographs and charts
O personal stories
O opening statements
past social policies

they are best described as reliable search engines.

254.34

step-by-step explanation:

the formula for area of a circle is given by

a = pi * r^2

a = pi * 9^2

a = 81*pi

using 3.14 as an approximation for pi

a = 3.14*81

a = 254.34

deflation   hope this

continental currency was denominated in dollars from $​1⁄6 to $80, including many odd denominations in between.