A substantial increase in the cost of energy will most likely result in the following changes to per-unit production costs, short-run aggregate supply, price level, and real GDP. Per-Unit Short- Run Production Aggregate Price Real Costs Supply Level GDP Per-Unit Production Costs: Decrease Short-Run Aggregate Supply: Increase Price Level: Increase Real GDP: Increase Per-Unit Production Costs: Increase Short-Run Aggregate Supply: Decrease Price Level: Increase Real GDP: Decrease O Per-Unit Production Costs: Decrease Short-Run Aggregate Supply: Increase Price Level: Decrease Real GDP: Increase Per-Unit Production Costs: Increase Short-Run Aggregate Supply: Increase Price Level: Increase Real GDP: Increase O Per-Unit Production Costs: Decrease Short-Run Aggregate Supply: Increase Price Level: Decrease Real GDP: Decrease