Solve the problem.The decay of 955 mg of an isotope is given by A(t) = 955e-0.016t, where t is time in years. Find the amount left after 93 years.
A. 940 mg
B. 216 mg
C. 108 mg
D. 212 mg
Answer: B
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Identify the terms. Then identify the coefficients of the variable terms of the expression.
?
A. 
, and 7 are the terms; 
and 2 are the coefficients.
B. 
, and 7 are the terms; 
and -2 are the coefficients.
C. 
, and -7 are the terms; 
and 2 are the coefficients.
D. 
, and -7 are the terms; 
and -2 are the coefficients.
E. 
, and -7 are the terms; 
and 2 are the coefficients.
Solve.A board of length 
inches was cut into two pieces. If one piece is 
inches, express the length of the other board as a rational expression.
A. 
in.
B. 
in.
C. 
in.
D. 
in.
Evaluate the expression for the given replacement values.x + y, for x = -4 and y = -7
A. 11 B. 3 C. -3 D. -11
Graph the piecewise-defined function.
A. 
B. 
C. 
D. 