If an economy is at long-run equilibrium, and consumers' confidence in the economy rises, . a. aggregate demand will shift leftward and the price level will fall
b. aggregate demand will shift rightward and the price level will rise
c. aggregate demand will shift rightward and the price level will fall
d. aggregate demand will shift leftward and the price level will rise

$2366

Explanation:

Given the following :

Cost formular for Cadavieco for its material and supplies is $1,990 per month plus $4 per vehicle.

That is :

Cost formular : 1990 + 4x

Where 1990 is the fixed cost

4x is the variable cost which depends on x, number of vehicles.

In November :

Planned activity = 94 vehicles

Actual activity : 54 vehicles

Therefore, materials and supplies in planning budget for November :

Fixed cost + 4(planned activity)

$1990 + $4(94)

$1990 + $376

= $2366