Answer:
$8.40
Step-by-step explanation:
"20% off" translates into multiplication of the regular price by (1 - 0.20), or 0.80:
The price after discount is 0.80($10.50) = $8.40
Answer:
x=7
Step-by-step explanation:
3(2x - 5) = 9(10 - x)
6x-15=90-9x
6x+9x=90+15
15x=105
x=7
Answer:
5
Step-by-step explanation:
8x+50=90
8x=40
x=5