Megan Hughes deposits $3,900 in an account that pays simple interest. When she withdraws her money 9 months later, she receives $4,221.75. What rate of interest did the account pay? Round to the nearest whole percent.​

b.   e = 7.5h

hope this , lovely!

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.