Find a formula for an ?for the arithmetic sequence.
?
a1 = 0, d = - 
?
A. an ?= 
n -
B. an ?= - 
n -
C. an ?= - 
n +
D. an ?= 
n +
E. an ?= - 
n +
Answer: C
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Use a calculator to approximate to three decimal places.
A. 0.049 B. 0.49 C. 0.005 D. 4.900
Solve the problem.In the formula N = Iekt, N is the number of items in terms of an initial population I at a given time t and k is a growth constant equal to the percent of growth per unit time. How long will it take for the population of a certain country to double if its annual growth rate is 4.1%? Round to the nearest year.
A. 7 yr B. 17 yr C. 49 yr D. 1 yr
Graph the parabola. Identify the vertex, axis, domain and range.x = (y - 5)2 + 2
A. Vertex: (2, 5); Axis : y = 5;
Domain: [2, ?); Range: (-?, ?)
B. Vertex: (2, 5); Axis : y = 5;
Domain: (-?, 2]; Range: (-?, ?)
C. Vertex: (1, -1); Axis: x = 5;
Domain: (-?, ?); Range: (-?, 2]
D. Vertex: (-1, 1); Axis: x = 5;
Domain: (-?, ?); Range: [2, ?)
Simplify the expression. Write the answer using only positive exponents. Assume that all variables represent positive real numbers.70 - (-13)0
A. 0 B. 20 C. -2 D. 2