Answer:
(y + z)(y + 4z)
Step-by-step explanation:

Answer:
Step-by-step explanation:
Two similar triangles.
10/26 = y/13
y = 5
x² = 13² - y² = 144
x = 12
2x + 3(6) = 36
2x + 18 = 36
2x = 18
x = 9
answer: each bracelet costs $9
Eccentricity = foci / half the length of the major axis
= 3.5 / 14 = 1/4