Mrs.Roberts charges 25 for a basic cake that serves 12 people. If you want a large cake, it costs an additional $1.25 per serving. Write equation for the total cost or a cake, where y represents total cost and x represents the number of additional servings. How much would a cake that serves 20 people cost?

The total cost of a cake that serves 20 people is $35.

Step-by-step explanation:

Total cost = yNumber of additional servings = xThe number of additional servings = 20 - 12 = 8. (x=8)

The equation can be formed as:

Total cost = basic cost + (No. of additional serving cost per additional serving)y = 25 + x1.25Substitute x=8 in the above equationy = 25 + 8(1.25)y =25+10y = 35

Therefore, the total cost of a cake that serves 20 people is $35.

I would choose the line with opens dots and put it at -2 and 4