Decide whether the equation defines y as a function of x.y = 5x + 3
A. function
B. not a function
Answer: A
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Factor completely, or state that the polynomial is prime.x2(a - 4) + y2(4 - a)
A. (a - 4)(x + y)(x - y) B. (a - 4)(x2 + y2) C. prime D. (4 - a)(x + y)(x - y)
Solve the problem.A mixture of chlorine and water contains a total of 60 gallons of liquid. There are 50 gallons of pure chlorine in the mixture. (i) What percent of the mixture is water? (ii) What percent of the mixture is chlorine? Round your answer to the nearest percent, if necessary.
A. (i) 83% water; (ii) 17% chlorine B. (i) 50% water; (ii) 50% chlorine C. (i) 45% water; (ii) 55% chlorine D. (i) 17% water; (ii) 83% chlorine
Graph the system of inequalities. Indicate the solution by shading.2x + 3y ? 6 x - y ? 3 x ? 1
A. 
B. 
C. 
D. 
Rewrite as an expression using only positive exponents.x-6 ? x-4
A. 
B. -x24
C. -x10
D. 