" In an online survey, 42% of teens between the ages of 13 and 17 said they can text while blindfolded. Estimate the number of teens who can text while blindfolded from a class of each of the following number of students. a. 100 students
b. 200 students
c. 150 students"
I don't understand what to do here.

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.