The number (in scientific notation) is:

The power of "-4" tells us to move the decimal point 4 places to the left.
So, moving it, the number becomes:
Answer:the answer is the third on
Step-by-step explanation:
ANSWER:

STEP-BY-STEP EXPLANATION:
Gasoline put into one gallon

Answer: 1820
Step-by-step explanation:
The first can be selected in 16 ways, the second in 15 ways, the third in 14 ways and the last in 13 ways
i.e. 16 x 15 x 14 x 13 => 43680
However, the order of the candidates does not matter and they can be selected in 4 x 3 x 2 x 1 => 24 ways
so, 43680/24 => 1820
The intercepts and the graph on your worksheet are not correct. Please see below for details:
has solutions at x=-1 and x=3 (use the quadratic formula to solve). That means these are the x-intercepts, namely points:
(-1,0) and (3,0).
The y-intercept comes from setting x=0 and calculating the y value:

so the y-intercept is (0,-3).
Now to the graph: Based on the form of the function we can see this is a quadratic function and its graph will be a parabola. You can reformat the expression in the following form

and that will indicate that the apex of the parabola (open up) will be at the point (1,-4).
Knowing the apex, the x intercepts, and the y intercept, we can graph it now.
Graph is in the image attached.