Now, assume that Heather’s credit union pays a compound interest rate of 9.8% compounded annually. All other things being equal, how much will Heather have in her account after 13 years? $3,865.80
$561.70
$1,866.60
$5,731.65

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.