According to the rule of 72 if beth by invest $200 and $1300 into two separate accounts with the same interest rate what amount will double faster

Write a corresponding real world problem to represent 2x - 125=400

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )

Divide. –40 ÷ –5 a –8 b 200 c -200 d 8