2) In 1992, the average credit card debt for an American family was $3275. In 2006, the
average credit card debt for a family was 88900.
Find the average rate of change of credit card
debt with respect to time.
A) 390.805
yr
B) 401.79 $
yr
C) 412.68
D) 423.57
$
E) 434 46
yr

cant open file sorry!

step-by-step explanation:

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

answer: 3.26019516

step-by-step explanation: