Use the properties of equality to solve the equation.
?
?
A.
B.
C.
D.
E.
none of these
Answer: B
Mathematics
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Solve the problem.The number of bacteria growing in an incubation culture increases with time according to 
where x is time in days. Find the number of bacteria when 
and 
.
A. 4800 bacteria; 1,228,800 bacteria B. 4800 bacteria; 76,800 bacteria C. 4800 bacteria; 38,400 bacteria D. 19,200 bacteria; 76,800 bacteria
Mathematics
Find the solution set of the system.
?
?
A. ?
B. ?
C. ?
D. ?
Mathematics
Divide. Leave your answer in exponent form. Assume that all variables in any denominator are nonzero.
A. x16 - x15
B. 
C. x
D. x31
Mathematics
Perform the operation indicated.
÷ 
A. 
B. 
C. 
D. 
Mathematics