1. Compute total variable cost per unit. 2. Compute total fixed costs. 3. Prepare a flexible budget at activity levels of 14,000 units and 18,000 units. Complete this question by entering your answers in the tabs below. Compute total fixed costs. 1. Compute total varlable cost per unit. 2. Compute total fixed costs. 3. Prepare a flexible budget at activity levels of 14,000 units and 18,000 units. Complete this question by entering your answers in the tabs below. Compute total variable cost per unit. repare a flexible budget at activity levels of 14,000 units and 18,000 units