Find the indicated cardinal number.Find n(A × C) given that A = {2} and C = {4, 5, 6}.
A. 2
B. 3
C. 4
D. 1
Answer: B
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Write expanded notation.The projected population in 2050 for a certain country is 4,297,476.
A. 6 millions + 7 hundred thousands + 4 ten thousands + 9 thousands + 7 hundreds + 2 tens + 4 ones B. 4 hundred thousands + 2 ten thousands + 9 thousands + 7 hundreds + 4 tens + 7 ones + 6 C. 4 millions + 2 hundred thousands + 9 ten thousands + 7 thousands + 4 hundreds + 7 tens + 6 ones D. 4 millions + 2 hundred thousands + 9 ten thousands + 7 thousands + 4 tens + 7 ones + 6
Solve the system of equations.x - y + z = 8x + y + z = 6x + y - z = -12
A. {(2, -1, -9)} B. {(-2, -1, -9)} C. {(2, -1, 9)} D. {(-2, -1, 9)}
Factor the polynomial completely. If the polynomial cannot be factored, say it is prime.7x2 - 10x - 8
A. (7x + 4)(x - 2) B. (7x + 2)(x - 4) C. (7x - 4)(x + 2) D. (7x - 2)(x + 4)
Graph the system of inequalities, and find the coordinates of the vertices.6y - x ? 8,-y + 3x ? 6,x ? 0
A. 
B. 
C. 
D. 