Find f(6) if f(x) = x2 ÷ 3 + x. 4 10 18

18 is the answer got it from the answer key

The value of f(6) is 18.

Step-by-step explanation:

Given expression,

For finding the value of f(6),

Put x = 6 in equation (1),

Hence, the value of f(6) is 18 for the given expression.

c. 4 1/4 pounds

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