Solve the Problem $\$ 4.2 \times 10 ^ { 10 }$

question 12

Multiple Choice

Solve the problem. Express your answer in scientific notation, and round to one decimal place.
-In a state with a population of 7,000,000 people, the average citizen spends $6,000 on housing each year. What is the total spent on housing for the state?

• A) \(\$ 4.2 \times 10 ^ { 10 }\)
• B) \(\$ 4.2 \times 10 ^ { 9 }\)
• C) \(\$ 42 \times 10^{10}\)
• D) \(\$ 42 \times 10 ^ { 11 }\)

---

Definitions:

CD4 Count

A laboratory test measuring the number of CD4 T lymphocytes in the blood, important for assessing the immune system's health, especially in individuals with HIV.

HIV Infection

A condition caused by the human immunodeficiency virus, which attacks the immune system, potentially leading to AIDS.

Kaposi's Sarcoma

A type of cancer that forms masses in the skin, lymph nodes, or other organs, often associated with weakened immune systems.