Solve the problem.The mass (in g) of gold plate on a dish is increased by electroplating. The mass of gold on the plate is given by m = 115 + 20.0t, where t is the time (in h) of electroplating. For what values of t is m between 133 g and 187 g? Graph the solution.
A. 0.9 < t < 3.6
B. 6.65 < t < 9.35
C. t < 6.65 or t > 9.35
D. t < 0.9 or t > 3.6
Answer: A
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A. 0.490 B. 0.500 C. 0.245 D. 0.250
Write the augmented matrix for the system.
A.
B.
C.
D.
Solve the problem.A musician plans to perform 4 selections. In how many ways can she arrange the musical selections?
A. 16 B. 32 C. 12 D. 24
Determine the value of each variable. +
=
A. a = -9; b = 11; c = -2; d = 6; e = 12; f = -7
B. a = 8; b = ; c = -40; d = 1; e = -27; f = -
C. a = 7; b = -5; c = 2; d = 0; e = -12; f = -9
D. a = -7; b = 5; c = -12; d = 0; e = -6; f = 9