Hello,
to find the total cost (c) of the colored strips we have to multiply the number of strips (n) by the cost of each color strip (99¢), that as an algebraic function is:

[¢]
Now, if we use 3 solid color strips, that means that we use 4 patterned strips, so:
Answer: c=n*99 and Cost per curtain= $7.97
Answer:
They all look right but i'm not sure about the last one?
Step-by-step explanation:
the answer is ssmsmsmsmsmememememeememekekeke
The answer is 4/15, because we have to get the denominaters to be the same, so the LCM of 5 and 15 is 15, so 15/5 is 3 and 4*3 is 12. Now, its 12/15-8/15 which is 4/15. Hope this helps!