Solve the equation.(6x + 2) - 7 = 7(x + 8)
A. {13}
B. {- 61}
C. {47}
D. {61}
Answer: B
Mathematics
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Solve the problem.A sample of 400 grams of radioactive substance decays according to the function 
where t is the time in years. How much of the substance will be left in the sample after 10 years? Round your answer to the nearest whole gram.
A. 12 g B. 1 g C. 282 g D. 0 g
Mathematics
Evaluate.
A. 15
B. 5
C. 
D. 30
Mathematics
Write the first five terms of the arithmetic sequence.an = an - 1 - 7; a1 = 5
A. 5, -7, -2, -9, -16 B. 5, -2, -9, -16, -23 C. -7, -2, 3, 8, 13 D. 4, -3, -10, -17, -24
Mathematics
Use substitution to determine whether the system of linear equations has no solutions, one solution, or infinitely many solutions.2x + 3y = 64x + 6y = 12
A. One B. No solutions C. Infinitely many
Mathematics