4glue sticks cost $7.76

which equation would determine the cost of 13 glue sticks?

13 glue sticks cost $25.22.

Step-by-step explanation:

4 blue sticks cost $7.76, this means that one glue stick costs

$7.76/4 = $1.94.

Let be the cost of the glue sticks, and be the number of glue sticks; then

We can use this equation to find the cost of 13 glue sticks; we just put into our equation and it gives:

So 13 glue sticks cost $25.22.

2(2x + 3) = -4 + 2(2x + 5)

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 6

4x - 6 + 6 = 4x - 6 + 6

4x = 4x

x = x

unlimited solutions.