2. Simplify ( − ) completely. Show as much work as possible for full credit.

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?

Aline has a slope of and a y-intercept of –2. what is the x-intercept of the line?

In priyas math class there are 10 boys and 15 girls. what is the ratio of boys to girls in priyas math class? express your answer as a decimal