Answer:
$11
Step-by-step explanation:
Set up the system of equations
18x + 9y = 45
20x + 12y = 52
Let's try to get y on one side for the first equation.
9y=45-18x
y=5-2x
Now substitute it into the second equation.
20x + 12(5-2x) = 52
20x + 60 - 24x = 52
-4x = -8
x = 2
Now solve for y using the first equation.
18(2) + 9y = 45
36 + 9y = 45
9y = 9
y = 1
Now that we know x and y we can solve for the price of 4 hot dogs and 3 drinks.
4(2) + 3(1) = z
8 + 3 = z
11 = z
That means that the price is 11 dollars.
Answer:
{-6, -2, 3, 4} is the domain of the following functions
Just plug in the numbers for the variables.
20+3(8)+17(2)=
The product of two integers of opposite signs equal to the additive inverse of the product of their absolute values. This, to find the product of a positive and a negative integer we find the product of their absolute values and assign minus sign to the product.
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