Identify the rules of algebra illustrated from left to right by the following statement.
(z? - 7) + 7 = z + (-7 + 7) = z + 0 = z
A. commutative property of addition; additive inverse property; additive identity property
B. associative property of addition; additive inverse property; additive identity property
C. commutative property of addition; additive identity property; additive inverse property
D. associative property of addition; additive identity property; additive inverse property
E. distributive property; additive identity property; additive inverse property
Answer: B
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Evaluate the expression for the given values of the variables, if possible.
x = -18
A. -9 B. -8 C. -10 D. 9
Solve the problem.A store sells tents, sleeping bags, and camp stools. A customer buys a tent, 5 sleeping bags, and 2 camp stools for $273. The price of the tent is 6 times the cost of a camp stool. The cost of a sleeping bag is $39 more than the cost of a camp stool. Find the cost of each item.
A. $36 for a tent; $45 for a sleeping bag; $7 for a camp stool B. $42 for a tent; $45 for a sleeping bag; $7 for a camp stool C. $36 for a tent; $50 for a sleeping bag; $11 for a camp stool D. $36 for a tent; $45 for a sleeping bag; $6 for a camp stool
Divide and simplify to the form a + bi.
A. -1 B. 1 C. 0 D. - i
Solve the equation by completing the square.x2 + 3x - 9 = 0
A. {-3 - 3
, -3 + 3
}
B. 
C. 
D. 