I'm stuck between answers B AND D, But I'm leaning towards B, I Need help though so if anyone can let me know/explain?

Dave receives a salary of $200 a week plus a commission of 10% of his weekly sales. An equation y=mx+b represents Dave’s weekly earnings. The y-intercept is Dave’s base salary. The slope of the line is his commission.

y = 0.1x + 200

Step-by-step explanation:

Independent variable (y-intercept) = $200

Dependent variable (Slope) = 0.1 (10%)

Why?

Since Dave's salary is fixed, the $200 he is earning is an independent variable. The commission depends on his weekly sales. The weekly sales is said to be "x". Since 10% is a dependent variable, it goes together with x.

you would have to sell 24 bracelets.

step-by-step explanation:

84/3.5 = 24

x is greater than 5

step-by-step explanation:

2x+7 is greater than 17

    -7                           -7

2x is greater than 10

divide by 2 each side

x is greater than 5