Use a real number to represent the situation.The thermometer read 53° below zero.
A. -53
B. +53
Answer: A
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Find the exact value of the expression using a sum or difference identity.tan (
)
A. 2 + 
B. 
C. -2 - 
D. 
Solve.The population of a small country increases according to the function 
where t is measured in years. How many people will the country have after 7 years?
A. 1,946,172 B. 813,337 C. 1,480,414 D. 1,872,777
Find the average rate of change of the function from x1 to x2.f(x) = 5x + 7 from x1 = -1 to x2 = 0
A. -28
B. 5
C. 
D. - 
Solve the problem using matrices.An application of Kirchoff's Rules to the circuit shown results in the following system of equations:
Find the currents I1, I2, and I3.
A. I1 = 2.5, I2 = 1.5, and I3 = 1 B. I1 = 3.5, I2 = 2.5, and I3 = 1 C. I1 = 5.5, I2 = 4.5, and I3 = 1 D. I1 = 4.5, I2 = 3.5, and I3 = 1