Answer:

10 girls

Step-by-step explanation:

b = 5

Slope-Intercept form: y = mx + b

<u>where:</u>

Therefore, the value of b is 5.

Learn more about slope-intercept form here:

brainly.com/question/26578672

brainly.com/question/26578663

2(n-9)

Hi there!

Let "a number" = n.

"The difference" translates to subtraction, so when the question tells us "the difference of a number and 9", it translates to "n-9".

"Twice" means we'll be doubling something. In this case, we're doubling "n-9":

I hope this helps!