Use the echelon method to solve the system.
+ 
= -1
- 
= - 
A. (-4, -1)
B. (3, -1)
C. (-3, -2)
D. No solution
Answer: C
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Write the expression as the sum or difference of multiples of logarithms.logb 
A. 
logb x + 
- 2 logb y - 4 logb z
B. 
(logb x3 + logb b5 - logb y8 + logb z16)
C. 
logb x + 5 - 8 logb y - 16 logb z
D. 
logb x + 
- 2 logb y + 4 logb z
Solve the problem.A reflecting telescope contains a mirror shaped like a paraboloid of revolution. If the mirror is 20 inches across at its opening and is 5 feet deep, where will the light be concentrated?
A. 0.6 inches from the vertex B. 0.4 inches from the vertex C. 5 inches from the vertex D. 1.3 inches from the vertex
Graph the function and its inverse using the same set of axes. Use any method.f(x) = log3 x; f-1(x) = 3x
A. 
B. 
C. 
D. 
An initial investment of $1,600 earns 27% interest, compounded continuously. What will the investment be worth in 11 years? ? Please enter your answer as a number without the units, rounded to the nearest hundredth.
Fill in the blank(s) with the appropriate word(s).