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1 pts Question 7 A major weakness of static budgets is that: all of the above. they force the manager to compare actual costs at one level of activity to budgeted costs at a different level of activity. Othey cannot be used to assess whether variable costs are under control. they are geared only to a single level of activity. 1 pts Question 8 Jonas Company makes three similar products that differ in quality, price and variable cost. A Sales Mix variance indicates which of the following? A change in the proportion of each product sold compared to the budget. A change in the variable cost of the products compared with the budget. A calculation error has occurred because this situation could not result in a Sales Mix variance Achange in market sine compared to the budget assumptions