The dot plot below shows the cupcake sales at a local bakery on Monday morning.
A. about 47%
B. about 38%
C. about 56%
D. about 28%

Wrong Picture.  Based on Picture, about 62.5%

Step-by-step explanation:

We see that there are 8 dots.  The question asks for students who answered 15 or more correct, so any students who answered 15 or above.  We see that from 15 to 18, there are 5 students.  So, %.  This matches none of the answers, and the picture does not match the question, so you posted the wrong picture.

d

step-by-step explanation:

d

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.