9. 5y
10. 102 square-4
11. 2a5 square +5b
12. 8m+2+4n
Answer:
The slope of the line is
.
Step-by-step explanation:
We use the formula change in y over change in x to find the slope:

Then we simplify:

The slope of the line is
.
$7.9 cost of one pack
10 packs cost is $79
She pays $29 + Voucher
From the total $79 we substract the $29 she paid with cash or card.
79-29=50
So the value of the voucher is $50
PS: celia should cut on chocolate. Not healthy for her :)
Well, we know that 2/3 is about equal to .666 and 2/4 equals .5 Since .666 is a greater number, Ricardo read more.
Y = mx + b
in this case m = 2 and b = 1 so
equation
y =2x + 1
hope this helps