Amusic store sold 10^3 cds and 10^2 cds players. if each cd costs $12 and each cd player costs $35,what was the store's total earnings

10^3= 1000
10^2= 100

multiply  1000  x $12= $12000 for CD's
multiply 100  x $35= $3500 for the CD players
now add the two totals
$12000 + $3500 =$15500 earnings for the store

hope this helps