Perform the Row Operation and Find the Equivalent System ?
A)

question 14

Multiple Choice

Perform the row operation and find the equivalent system. Add Equation 1 to Equation 2.? $$\left\{ \begin{array} { c c c } x - 4 y + 5 z & = 9 & \text { Equation 1 } \\- x + 5 y - 9 z & = 8 & \text { Equation 2 } \\4 x - 5 z & = 0 & \text { Equation 3 }\end{array} \right.$$ ?

• A)? \(- y + 4 z = 17\)
• B)? \(- 4 y + z = 17\)
• C)? \(- 4 y - z = 17\)
• D)? \(y + 4 z = 17\)
• E)? \(y - 4 z = 17\)

---

Definitions:

Flexible Budget

A report showing estimates of what revenues and costs should have been, given the actual level of activity for the period.

Revenue Variance

The difference between the actual revenue earned by a business and its expected (or budgeted) revenue, which can be favorable or unfavorable.

Sales Revenue

The income received by a company from its sales of goods or the provision of services before any expenses are deducted.

Actual Level

The real, observed state or value of a variable or metric at a given point in time, opposed to theoretical or planned levels.