Use factoring to solve the equation.12d2 + 38d + 30 = 0
A. 
, 
B. - 
, - 
C. - 
, - 
D. 
, 
Answer: C
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FInd the tangential and normal components of the acceleration.r(t) = 
i + 
j + 12tk
A. a = 
N
B. a = 
T
C. a = 25T + 25N
D. a = T + 25N
Solve the problem.The half-life of a certain radioactive substance is 5 years. Suppose that at time 
there are 28 g of the substance. Then after t years, the number of grams of the substance remaining will be N(t) = 28
t/10How many grams of the substance will remain after 45 years?Round to the nearest hundredth of a gram.
A. 1.24 g B. 0.15 g C. 0.62 g D. 0.31 g
Solve.A $110,000 trust is to be invested in bonds paying 9%, CDs paying 5%, and mortgages paying 10%. The sum of the bond and CD investment must equal the mortgage investment. To earn an $9330 annual income from the investments, how much should the bank invest in bonds?
A. $25,000 B. $28,000 C. $27,000 D. $55,000
Write the first four terms of the sequence whose general term is given.an = 
A. 3, - 
, 1, 
B. -3, - 
, 1, 
C. -3, 
, 1, 
D. 3, 
, 1, 