<span>8 1/5 ( 4 2/5 + 3 3/10)
= </span><span>8 1/5 ( 4 4/10 + 3 3/10)
= 8 1/5 * 7 7/10
= 41/5 * 77/10
= 3157/ 50
= 63 7/50
</span>
Answer:
x = - 4, 0, 3, 4
Step-by-step explanation:
Given
f(x) = - 5x(x² - 16)(x - 3) ← x² - 16 is a difference of squares, thus
f(x) = - 5x(x - 4)(x + 4)(x - 3)
To find the zeros, equate f(x) to zero, that is
- 5x(x - 4)(x + 4)(x - 3) = 0
Equate each factor to zero and solve for x
- 5x = 0 ⇒ x = 0
x - 4 = 0 ⇒ x = 4
x + 4 = 0 ⇒ x = - 4
x - 3 = 0 ⇒ x = 3
Thus the zeros are
x = - 4, x = 0, x = 3, x = 4
As the weight increases, the price increases.
