exam Maths Puzzle Numerical Ability

#68. 6-4Absolute valuex+3=-2?
#28. x squared +(y-2)squared=16 I need the Center and radius of each circle and sketch the graph
#50. x squared + 10x +y squared - 8y = -40 Determin

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1.) Simplify the following with NO NEGATIVE EXPONENTS in your final answer.

(4a^x+3)(2a^1-x)= Adult tickets for a play costs $14 and child tickets costs $3. If there were 26 people at a performance and the theater collected $199 from ticket sales. How many adults and children attended the play?