Look at the pictures above for yor answers and the rules ...
B- $7.50. Take 30 and divide it by 4, and you get your weekly subscription cost.
Answer:
640
Step-by-step explanation:
you say 100% = 800
what about 80%(i get 80% after substracting 100% that's marked price - 20% discount)
then u say 80×800÷100
Answer: it is a reflection across the x-axis sorry if I responded late