3.6 because four does not round up to the next number, it has to be five for greater.
Since the bases are the same you can subtract the exponents. All you have to do is 5-2, which is 3 therefore the answer is x^3.
<span>3x(x+3)^2
3x(x^2 + 6x + 9)
= 3x^3 + 18x^2 + 27x
answer
</span>3x^3 + 18x^2 + 27x
V = s/t => average speed = 39,1/2,06= about 19 mi/hr, i guess
Solving the second equation for y..
2x-y=7 divide both sides by -1
y-2x=-7 add 2x to both sides
y=2x-7
When a solution exists, y=y, so we can say:
2x-7=2x+3 subtract 2x from both sides
-7=3
-1 != 3
Since the above is never true, there are no solutions to this system of equations.
Intuitively, this is because both lines have the same slope, they are parallel, and have an different y-intercept, thus they will never cross each other...
