The x-intercepts and vertex of the quadratic relation y = –(x + 3)(x + 5) are: a) x-intercepts are 3 and 5; vertex is (4, 0)
b) x-intercepts are –3 and –5; vertex is (–4, 9)
c) x-intercepts are 3 and 5; vertex is (4, –63)
d) x-intercepts are –3 and –5; vertex is (–4, 1)

d) x-intercepts are –3 and –5; vertex is (–4, 1)

Step-by-step explanation:

parabola are the vertex findings -4

we find these using formula m +n  / 2

m+ n = -3 -5 / 2 = -4

m+n / 2 = -8/2 = -4

xv = -4

plug in -4 to find yv

(x+5)

(-4 + 5)

yv = 1

the answer is 15% decrease

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.