AE is about half of AC. What I did was get half of 28, which is 14, and represented one of the numbers.
3 x 7 = 21 - 7 = 14
It is D.
(I don't know for sure if this is right, but I did the best I could)
Since the sweater is now 30% off, that means it is selling for 70% of it's original price ( 100% - 30% = 70%).
Multiply the original price by 70%:
52 x 0.70 = 36.40
The sale price is $36.40
Answer:

Step-by-step explanation:
bx-c=ax+d
<=> bx-ax=c+d
<=> (b-a)x=c+d
<=> x=(c+d)/(b-a)
Answer:
x = 5
Step-by-step explanation:
2x + 8 = 18
2x = 10
x= 5