Solve the system by the substitution method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Write the expression in simplest form. If a radical appears in the denominator, rationalize the denominator.
A. 24
B. 5
C. 
D. 
Mathematics
Provide an appropriate response.Subtract: 15 - 7 - 5
A. 3 B. 12 C. 13 D. 4
Mathematics
Answer the question.f(x) = 
Does 
f(x) exist?
A. No B. Yes
Mathematics
Solve the problem. Round rates to the nearest tenth of a percent and dollar amounts to the nearest cent.A local dealer sells baseballs for $25 each. If $6.86 is the markup, what is the cost and the markup on cost?
A. $18.14, 72.6% B. $25, 27.4% C. $18.14, 37.8% D. $31.86, 21.5%
Mathematics