Erica sells magazine subscriptions and makes a flat rate of $5.35 for each subscription she sells. If Erica made $42.80 on Monday, $64.20 on Tuesday and $74.90 on Wednesday, how many subscriptions did she sell in the three days?

Add Erica’s earnings for the three days: $42.80 + $64.20 + $74.90 = $181.90. Divide the total by her rate of $5.35 per subscription: $181.90 ÷ $5.35 = 34. She sold 34 subscriptions, which is choice C.

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