need help asap pleaseee

The graph illustrates a normal distribution for the prices paid for a particular model of HD television. The mean price paid is $1600 and the standard deviation is $85. What is the approximate percentage of buyers who paid between $1600 and $1855? What is the approximate percentage of buyers who paid between $1600 and $1685? What is the approximate percentage of buyers who paid between $1515 and $1685? What is the approximate percentage of buyers who paid between $1430 and $1600? What is the approximate percentage of buyers who paid more than $1770 ? What is the approximate percentage of buyers who paid more than $1855