Answer:
The regular price was $53.85
Step-by-step explanation:
78% = $42
42 ÷ 78 x 100 = 100% = $53.85 (when rounded to 2 d.p)
Step-by-step explanation:
Question 46.

Answer: E. None of these.
Question 47.

Answer: E. None of these.
Answer:
10y + 5
Step-by-step explanation:
You need to combine the Numbers with variables, and the numbers without variables need to be combined as well. Therefore, the answer is 10y +5.
500+250x=300x
-250x=-250x
500=50x
To get the 50 away from the x you got to divide by 50 on both sides
500/50
Answer is 10=x