What is the value of government expenditures in \( 2015 ? \) \( \$ \square \) billion

Evaluate the expr \( 10 y-7 \) for \( y=3 \)

2. A rectangular prism is 4 inches long, 3 inches wide, and 8 inches tall. Which expression can be used to find the volume of the rectangular prism in cubic inches? (A) \( (4 \times 3) \times 8 \) (B) \( 4+3+8 \) (C) \( (4 \times 3)+8 \) (D) \( 4-(3 \times 8) \)

b) \( 6,+8 \times 54= \)

In the cost function below, \( C(x) \) is the cost of producing \( x \) items. Find the average cost per item when the required number of items is produced. \( C(x)=4.5 x+9,300 \) \( \begin{array}{lll}\text { a. } 200 \text { items } & \text { b. } 2000 \text { items } & \text { c. } 5000 \text { items }\end{array} \)

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