Answer:
Step-by-step explanation: for the first part, 525/7 = 75.
for the second part, 55y = x, which means 55 words per day for a total of (55*7) or 385
for the third part, 1200-525-385=290, not totally sure, but I think this is the answer, the text was a bit blurry and I couldn't understand everything, try not to following this blindly and just see if it makes sense. Hope I could help