We know that it is a 7th degree polynomial with 4 terms.
In order to find this, we must first do the subtraction.
6x^6 − x^3 y^4 − 5x y^5 - (4x^5 y + 2x^3 y^4 + 5x y^5)
Then we can simplify using like terms.
6x^6 - 4x^5y - 3x^3y^4 - 10xy^5
You'll see the 4 terms in the final answer. You'll also see that the term with the highest number of variables is -3x^3y^4, which has 3 x's and 4 y's for a total of 7. This makes this a 7th degree polynomial.
I am pretty sure you set this equation up correctly. All you need to do is calculate the approximate value, which is -2.91256.
X=cost for 1 soft taco
x=cost for 1 doubledecker
dory is
11.25=3x+3y
nemo buys
10=4x+2y
we have
11.25=3x+3y and
10=4x+2y
divide second equation by 2
5=2x+y
multiply by -3
-15=-6x-3y
add to first equatin
-15=-6x-3y
11.25=3x+3y+
-3.75=-3x+0y
-3.75=-3x
divide both sides by -3
1.25=x
subsitute
5=2x+y
5=2(1.25)+y
5=2.5+y
minus 2.5
2.5=y
double dekesr cost $2.50
soft tacos cost $1.25
i have no idea what this says i just need to answer something to get help on a question