Write the logarithmic equation in exponential form.ln x = 7
A. 7e = x
B. e7 = x
C. ex = 7
D. x7 = e
Answer: B
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Solve using Cramer's rule. 4a- 4c = 4 3a + 7b + 2c = 86 2a - 4b= -26
A. (5, 9, 4) B. (9, 4, 9) C. (6, 7, 4) D. (5, -9, -4)
Graph the radical function. Compare the graph to that of the square root function or cube root function.H(x) = 
- 2
A. It looks like the graph of the cube root
function, but it is shifted 2 units to the right.
B. It looks like the graph of the cube root
function, but it is shifted 2 units down.
C. It looks like the graph of the cube root
function, but it is shifted 2 units to the left.
D. It looks like the graph of the cube root
function, but it is shifted 2 units up.
Write the expression as a pure imaginary number.
A. 10i
B. -10i
C. -
i
D. ±10
Solve the problem.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 801. Find a linear function which fits this data.
A. y = -4.525x + 484.25 B. y = 4.0725x + 488.25 C. y = 4.0725x - 488.25 D. y = 4.525x + 484.25