Answer:
Solow growth rate = growth rate of long run real GDP on LRAS = 3%.
Spending growth rate = 10%. Hence rate of inflation is 10% - 3% = 7%. This is because AD meets LRAS to determine a combination of Solow growth rate and inflation rate.
In the long run SRAS meets LRAS as well as AD. Hence, rate of inflation in long run equals the rate of expected inflation. Thus expected inflation is also 7%.