Two families buy refreshments at a concession stand. Each drink costs $d$ dollars.
Each snack costs $s$ dollars.
The Blake family buys $3$ drinks and $2$ snacks for $12$ .
The Reese family buys $2$ drinks and $4$ snacks for $16$ .

What is the cost of one drink at the concession stand?

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

answer:

a=9

step-by-step explanation: lmk if you need a explanation