Determine whether the relation is a function.
A. Not a function
B. Function
Answer: A
Mathematics
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Solve the problem.In a state with a population of 7,000,000 the average citizen spends $6,000 on housing each year. What is the total spent on housing for the state? Express answer in scientific notation.
A. $4.2 × 109 B. $42 × 1011 C. $42 × 1010 D. $4.2 × 1010
Mathematics
Solve the problem. Round your answer to the nearest tenth, when appropriate. Use the formula 
, as needed.Find the pH if [H3O+] = 1.0 × 10-6.
A. -8 B. -6 C. 6 D. 8
Mathematics
Decide whether the statement is always true, sometimes true, or never true.The difference between a positive number and a negative number 
A. Sometimes true B. Always true C. Never true
Mathematics
Simplify.9 ? 2 - 1
A. 17 B. 18 C. 9 D. 19
Mathematics