(15^18) / (15^3)
If the exponents you're dividing have the same base, you subtract them.
18 - 3 = 15
15^15
ANSWER
EXPLANATION
The given parabola has directrix x=2.
This implies that, the parabola is opens in the direction of the negative x-axis because it must open in a negative direction to the directrix.
The equation of such parabola is of the form:
where (h,k)=(-5,8) is the vertex.
But the parabola opens to the left.
p=-7
The equation now becomes
Use area formula (length x width)
42 x 25.5 = 1,071
Divide by total cost of wall paper
1,071/771.25 = $1.38 per square foot
17 * 0 + -2.
Now we rewrite the equation and make it 17 * 0 - 2 and u get -2.
If I did my math correctly I believe your answer will be C. :)