Evaluate  0.3 y+\dfrac yz0.3y+zy0, point, 3, y, plus, start fraction, y, divided by, z, end fraction  when  y=10y=10y, equals, 10  and  z=5z=5z, equals, 5.

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

The students in a class were asked how many siblings they have. the data obtained is represented in the dot plot. the number of students who have no siblings is . the number of students who have three or more siblings is .