Pls with the two of them with work

7.) B

8.) D

Step-by-step explanation:

For #7, look at the graph and plot y = 6, go down and you'll see that x = -1 (approximately).

For #8, 1 < x < 9 basically means any number in the x-axis between 1 to 9. In those range, you can plot (1, 9), (1.1, 8.9), (1.2, 8.8), (1.25, 8.75), (1.5874875, 8.2858426) etc. There are an infinite number between 1 to 2 alone, so D is the answer.

answer: $34.31

step-by-step explanation:

$11.99 x 3 = $35.97

$35.97 - 10% = $32.37

$32.37 + 6% = $34.31

b.an increase in a causes b to decrease