20, you just need to substitute the x value in the equation
(-2)2-7(-2)+10=
=20
So, if k/9=3/9, then k=3, because it is a variable substituting 3. :D Hope I could help!
Answer:
$5
Step-by-step explanation:
Cost per slice
3.75 / 3 = 1.25
Cost of 4 slices
1.25 * 4 = 5
Instead of typing it all on here, I included my explanations with the work.