Multiply and simplify.
? 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Match the given equation with one of the graphs.
- 
= 1
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.A certain radioactive isotope decays at a rate of 2% per 100 years. If t represents time in years and y represents the amount of the isotope left then the equation for the situation is 
In how many years will there be 93% of the isotope left?
A. 700 yr B. 350 yr C. 363 yr D. 253 yr
Mathematics
Write the equation of a sine function that has the given characteristics.The graph of y = 
, shifted 4 units upward
A. y = 
+ 4
B. y = 
- 4
C. y = 
D. y = 
Mathematics
Solve the equation for x, where x is restricted to the given interval.y = cos (x + 12), for x in [-12, ? - 12]
A. x = arccos y + 12 B. x = arccos (y + 12) C. x = arccos y - 12 D. x = arccos (y - 12)
Mathematics