Solve.
= 
+ 
, for A
A. A = 
B. A = 2 + B + C
C. A = 
D. A = 
Answer: A
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. -14 B. -5 C. 0 D. 1
Solve the problem.A biologist collected 115 fern and moss samples. There were 71 fewer ferns than moss samples. How many fern samples did the biologist collect?
A. 22 fern samples B. 82 fern samples C. 93 fern samples D. 44 fern samples
Solve the problem.A weight suspended from a spring is vibrating vertically with up being the positive direction. The function f(t) = 10 sin 
represents the distance in centimeters of the weight from its rest position as a function of time t, where t is measured in seconds. Find the smallest positive value of t for which the displacement of the weight above its rest position is 5 cm. Round answer to three decimal places, if necessary.
A. 1.586 B. 0.222 C. 2.293 D. 0.556
Use a calculator to solve the equation. Round to the nearest hundredth, if necessary.(m + 2.72)2 = 21.16
A. {1.88, -7.32} B. {4.29, -4.29} C. {2.95, -6.25} D. {1.88}