Hello,
Y = ax + b (where a is the slope) si here the slope is 5/4
The first book was $6. The second book was $10. The last book was $20.
Hope this helps!
What’s the answer? I can’t divide anything if it’s just x. Example: 12x+24x+30 = 467. Then you can just divide the numbers after they are added up to see what x equals. 30 and 24x + 12x won’t go together because they have x, 30 doesn’t. Move your x’s to Texas.