How many times does your heart beat in a day if it beats 70 times a minute

I’m confused on how to work the pie charts

1.based of the diagrams what is the the value of x? 2.how would you verify your answer for x

If you invest 1,500 today in a bank that gives you a 5 percent annual interest rate, which of these items can you buy in two years? a. electronics worth $1,650 b.fitness equipment worth $1,700 c.a holiday package worth $2,000