The critical path of a given circuit has cell delays of 0.9…

The critical path of a given circuit has cell delays of 0.9 ns, interconnect delays of 2.1 ns, and a clock skew of 1.1. For a setup time of 0.2 ns, what is the setup slack for this path assuming a 5 ns clock period? Give the exact answer in nanoseconds, but omit the “ns”.

A company budgets $140,000 for fixed manufacturing overhead…

A company budgets $140,000 for fixed manufacturing overhead costs for a particular period, expecting to produce 18,000 units of its product. The standard variable cost per unit is $9. During the period, the company actually incurs fixed overhead costs of $135,000 and produces 17,000 units. What is the fixed cost spending variance for this period?