**Answer:**

22500 people

**Step-by-step explanation:**

because about 90 percent of people are right handed whole only 10 percent are left handed

Take the derititve

f'(x)=3x^2+6x-24

set to zero

0=3(x^2+2x-8)

0=3(x-2)(x+4)

at x=2 and -4

those are where the min and max are

ok so

sign chart

to the lft of -4, the sign is positive

betweeen -4 and 2, the sign is negative

tothe right of 2 the sign is positive

max=sign changef from (+) to (-)

min=sign change from (-) to (+)

so max at x=-4 and min at x=2

find x=2, the value is -28

answer is C

2. 4th degree so quartic (qua, like quad or quadrilatal)

**Answer:**

<h2>(6 + i)(2 + 9i) = 3 + 56i</h2>

**Step-by-step explanation:**

Use **FOIL**: (a + b)(c + d) = ac + ad + bc + bd

and i² = -1

(6 + i)(2 + 9i) = (6)(2) + (6)(9i) + (i)(2) + (i)(9i)

= 12 + 54i + 2i + 9i²

= 12 + 54i + 2i + 9(-1)

= 12 + 54i + 2i - 9 <em>combine like terms</em>

= (12 - 9) + (54i + 2i)

= 3 + 56i

<span>This is the answer **b = 60**

</span>

The answer for this question is -20.You have to subtract -15-5 and that’s what you get.