<h3>The expression for the length of fabric used for each doll is

</h3>
<em><u>Solution:</u></em>
Given that,
Margaret has 16 yards of fabric
she is making dresses for z doll
Therefore,
Total length of fabric = 16 yards
Number of dresses = z dolls
Therefore,

Thus, the expression for the length of fabric used for each doll is 
X2<span> - 25 = x</span>2<span> - 5</span>2<span> = (x - 5)(x + 5)
</span>
b = - 4
slope m = (0 + 4)/(4 - 0) = 4/4 = 1
equation
y = x - 4
Use the slope formula and slope-intercept form Y=Mx+b to find the equation.
Y=2x + 14