Answer:
z−181=−170
Step 1: Add 181 to both sides.
z−181+181= −170+181
z=11
The discount is $2. 2/20 is 0.1 or 1/10 which as a percentage would be 10%. The discount of $2 is <u><em>10%</em></u> off.
Answer:
Simplify 15 by dividing it by 3, and then shade 2/3rds of the simplified sections. This should come out to 3 sections of five, so shade in 10 out of the 15 sections
