Likely intended: the temperature rise causes a cumulative increase in daily growth. Assume at 8°C, growth is G, but since not given, assume the increase applies to daily rate and we integrate.
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- Total = 10 × (G + 1.375) = 10G + 13.75.
- But G unknown.
- Re-read: "growth rate increases by 0.5 mm/day per 1°C", so sensitivity is given, but baseline not specified.
- Standard interpretation: growth rate rises linearly with temperature, so assume daily growth starts at r and ends at r + (0.5 × 5.5) = r + 2.75.
- But without r, cannot compute unless baseline is zero-sided.
- Assume: at 8°C, growth is 0 mm/day (initial condition). Then final = 2.75 mm/day.
