Slope <em>m</em> has a form of,

We have points <em>A</em> and <em>B</em>,

Now insert the values in the slope formula,

The answer is A.
Hope this helps.
<u>r3t40</u>
Both of the ones on the right represent functions
A. down
The -4 moves the y-intercept down from the origin to -4
Hi Alyssasmith21!
So $55 for each diamond ring and wants to know how many she needs to sell to get $605. OK this is easy what we have to do is 605/55 to find how many rings which is 11. She needs to sell 11 rings to get $605.
Hope this helps!
<span>ME = 1.10.
Explanation:
The margin of error, ME, is given by the formula z*(</span>σ<span>/</span>√<span>n).
Since we want a 90% confidence interval, z=1.645.
</span>σ<span>=6, and n=80, giving us ME=1.645*(6/</span>√<span>80). This comes out to 1.10.</span>