Draw a bar model that shows a pen is 4 times as long as an eraser that is 1 1/3 inches long.

Since, the length of one eraser =

Also, the length of one pen = 4 × the length of one eraser

Thus, the length of one pen is 16/3 inches.

Solution by the bar model :

Take 4 boxes representing the  ,

Add the total value of the boxes

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8  

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.