5. Evaluate: 6x2 + 9x - 7, when x = 2

23

Step-by-step explanation:

6×2=12

We know that x=2, so we multiply the coefficient, 9 by 2.

9x

x=2

9(2)

=18

18 plus 12 is 30.

30 minus 7 is 23.

To solve which ordered pair lie on the graph of the given function f(x) = 128(0.5^2)

You mus substitute each ordered pair then check if it satisfy the given function

(0,1)

1 = 128(0.5^0)

1 = 128 so wrong

(1, 64)

64 = 128(0.5^1)

64 = 64 correct

(3, 16)

16 = 128(0.5^3)

16 = 16 correct

0.5 = 128(0.5^8)

0.5 = 0.5 correct