Solve the equation.2z2 + 2 = 100
A. {±8}
B. {7}
C. {±7}
D. {50}
Answer: C
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Provide an appropriate response.Which fraction is equivalent to 
and has a denominator of 30?
A. 
B. 
C. 
D. 
Solve the inequalities
Solve the inequality. Express your answer using interval notation. Graph the solution set.-2x - 6 ? -3x - 1
A. (-?, 5)
B. [5, ?)
C. [-7, ?)
D. (-?, 5]
Solve the problem.Assume that the price per unit d of a certain item to the consumer is given by the equation 
where x is the number of units in demand. The price per unit from the supplier is given by the equation 
where x is the number of units supplied. Find the equilibrium price and the equilibrium quantity.
A. equilibrium price: $35 per unit; equilibrium quantity: 50 units B. equilibrium price: $50 per unit; equilibrium quantity: 30 units C. equilibrium price: $20 per unit; equilibrium quantity: 50 units D. equilibrium price: $30 per unit; equilibrium quantity: 50 units