Solve the problem.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? Write your answer in scientific notation.
A. $4.2 × 109
B. $42 × 1011
C. $42 × 1010
D. $4.2 × 1010
Answer: D
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Simplify the expression. Write the answer using positive exponents.(4p3)-3
A. 
B. 
C. -64p9
D. 
Evaluate.
A. 840 B. 2520 C. 210 D. 35
Solve the problem. If necessary, use 3.14 for ?, and round your answer to the nearest hundredth of a unit.A wicker basket has a circular rim with a diameter of 6 in. How many inches of ribbon are needed to go once around the rim?
A. 16.84 in B. 37.68 in C. 18.84 in D. 36 in
Solve the problem.Brand X copier has improved its copier so that it produces 13% more copies than its old model. If the old model ran 339 copies per hour, how many copies would the new model run? Round your answer to the nearest whole number.
A. 181 copies per hour B. 354 copies per hour C. 368 copies per hour D. 383 copies per hour