The amount of Jen's monthly phone bill is normally distributed with a mean of $61 and a standard deviation of $12. What percentage of her phone bills are between $25 and $97?

Bernice paid $162 in interest on a loan of $1800 borrowed at 6%. how long did it take her to pay the loan off?

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%