Help pls I’ll give brainliest... it’s critical

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4

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?

Add the fractions and simplify 1/2+ 1/3