Will give brainless to whoever helps me solve this!!

Item 8 an account earns simple interest. $700 at 8% for 6 years a. find the interest earned. $ b. find the balance of the account. $

Combined megan and kelly worked 60 hours.kelly worked twice as many hours as megan.how many hours did they each worked?

What is the expression in factored form? 3x^2 + 18x + 24 a. 3(x+2)(x+4) b. 3(x-2)(x+4) c. 3(x-2)(x-4) d. 3(x+2)(x-4)