Answer:
$120.
Step-by-step explanation:
The amount he sells the tool kit for = 80 + 20% of 80
= 80 + 16
= $96.
Let m be the marked price, then
m - 0.20m = 96
0.8m = 96
m = $120.
Answer: Varies
Step-by-step explanation:
There would still be some Xs and Ys.
X is equal to 8. The work for that is on the attached picture.
Answer:
f(-2)=4(-2)+1= 7
Step-by-step explanation: