catherine has $12.50 to spend on erasers. if each for 50 cents, how much can she buy?
you do inverse operation and divide 0.5 from both sides to get 25.
catherine can buy 25 erasers.
answer:there are 96 wizards
20% of 120 is 24. if you subtract 24 from 120 you get 96
if the equation log(6x+10)=log(1/2) x is solved by graphing, the curves intersect at approximately x=0.46