SOMEONE PLEASE HELP ME CLICK ON THE PDF AND SCROLL DOWN AND ANSWER 7-12

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?

I’m confused on how to work the pie charts