<span>the equation that most accurately depicts the word problem
is
3xn=$3.85
proof
n=</span>
<span>n=$3.85/3=$1.28
the price is $1.28 per pound, 3 pound costs 3x$1.28=$3.85
</span>
For the first digit there are 7 choices. For the second digit there are 6 choices (because we can't use the same one again). And so on, until there is only one choice for the last digit.
The number of possible codes is this:
7*6*5*4*3*2*1 = 7! = 5040
<span> You refer to a multiple of ten. As a multiple of ten you can just add it to another number easier than a "ones number".</span>
The slope (or average rate of change) formula is:
. It is easy to remember as "slope is easy and fun, rise over run" where the y-values of the 2 points would be the "rise" and the x-values of the 2 points would be the "run" So with two points, you label one point as
and the other as
. Then you insert these points into the slope formula (m represents slope). So,
where (-3,6) is x2 and y2 and (5,1) is x1 and y1. It would simplify to
.
The vertex will be (-3), (-3)
Hope this helps!
