Translate the sentence into an equation using the variable x and solve the equation.Twice a number plus 4 is 12.
A. x + 4 = 12; x = 8
B. 2 + x + 4 = 12; x = 6
C. 2x + 4 = 12; x = 4
D. 2(x + 4) = 12; x = 2
Answer: C
Mathematics
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Use the distributive property to multiply. Then, if possible, simplify the resulting expression.3(7 + m)
A. 21m B. 21 + m C. 21 + 7m D. 21 + 3m
Mathematics
Subtract. Simplify, if possible.
- 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.In 2005, John invested $35,000 in the stock market. By 2011 his investment had grown to $36,400. Find an equation relating time and the value of the investment. If the market continues to grow at the same rate, how much will be in his account in 2018? Give your answer to the nearest dollar.
A. $36,634 B. $36,401 C. $37,800 D. $38,033
Mathematics
Solve the equation.3x2 - 4x - 7 = 0
A. 
, 0
B. 
, -1
C. 
, -1
D. 
, 1
Mathematics