exam Maths Puzzle Numerical Ability

Solve each system of equations. Let z be the parameter.

x + 2y + 3z = 11 2x - y + z = 2

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exam Other Question

How do I find the domain and the range for the function f(x)=ex
and express both in interval notation.

NOTE: the (x) following the (e) should be written like expanded notation, I just do not know how to do that on the computer. Prince and Madonna were the top two moneymakers in the 2004 usic industry. Prince earned $1.6 million more than Madonna, and together they earned$111.4 million. What were the earnings of each of these performers in 2004?