Explanation:
This is a product of two expressions that is equal to zero. Note that any xxx value that makes either (x-1)(x−1)left parenthesis, x, minus, 1, right parenthesis or (x+3)(x+3)left parenthesis, x, plus, 3, right parenthesis zero, will make their product zero.
begin{aligned} (x-1)&(x+3)=0
swarrow quad&quadsearrow x-1=0quad&quad x+3=0 x=1quad&quad x=-3 end{aligned}
(x−1)
↙
x−1=0
x=1
(x+3)=0
↘
x+3=0
x=−3
Substituting either x=1x=1x, equals, 1 or x=-3x=−3x, equals, minus, 3 into the equation will result in the true statement 0=0, equals, 0, so they are both solutions to the equation.
Answer: D. changes direction
Explanation: A lens works by refraction: it bends light rays as they pass through it so they change direction.
Hope this helps
Wikipedia says that the largest major plate is the Pacific, and that the smallest minor plate is Juan de Fuca. So that must be the correct answer after all.