Factor by grouping.3x2 - 9xy + 4xy - 12y2
A. (3x + 4y)(x - 3y)
B. (3x - 4y)(x - 3y)
C. (3x + 4y)(x + 3y)
D. (3x2 + 4y)(1 - 3y)
Answer: A
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Write each number in engineering notation.6980
A. 69.8 ×106 B. 6.98 ×103 C. 6.98 × 10-3 D. 0.698 × 104
The table shows Jose's expenses for one month. Use the table to answer the question.How much more did Jose spend on food than on phone bills?Monthly ExpensesRent$403Food$159Car repairs, gas$97.57Utilities$68.64Phone (long distance)$69.41Phone (local)$23.55Drumming lessons$96Entertainment$61.48
A. 66.04 B. 113.14 C. 57.92 D. 89.59
Round the decimal to the given place value.0.9971, nearest hundredth
A. 1.00 B. 1.10 C. 0.99 D. 1.90
Assume that the national health care expenditure H (in billions of dollars) can be modeled (that is, accurately approximated) by the formula 
where t is the number of years past 1960. Approximate the national health expenditure in 1974. Round your answer to the nearest tenth of a billion.
?
A. $134.7 billion B. $110.9 billion C. $122.2 billion D. $121.7 billion E. $134.2 billion