Solve the system of the equation for z.  x – y +5z = 124x + z = 2x + 4y +z =-6{“version”:”1.1″,”math”:”x - y +5z = 124x + z = 2x + 4y +z =-6″}

Find the foci of the ellipse whose equation is given.  36(x-3)2+25(y+1)2=900{“version”:”1.1″,”math”:”36(x-3)2+25(y+1)2=900″}  

Find the indicated sum.  ∑k=24  k(k-7){“version”:”1.1″,”math”:”∑k=24  k(k-7)”}

Solve. The half – life of silicon – 32 is 710 years. If 30 grams is present now, how much will be present in 300 years? (Round your answer to three decimal places.)

x + y = 02x +3y = -7{“version”:”1.1″,”math”:”x + y = 02x +3y = -7″}Solve the system of the equations by substitution for x.   

Write the first four terms of the sequence define by the recursion formula.  a1=-2 and an=-3an-1 for n≥2{“version”:”1.1″,”math”:”a1=-2 and an=-3an-1 for n≥2″}

Solve the exponential equation. Express the solution set in terms of natural logarithms.  ex+5=2{“version”:”1.1″,”math”:”ex+5=2″}

Evaluate the given binomial coefficient.  62{“version”:”1.1″,”math”:”62″}

Evaluate the expression without using a calculator.  eln9x3{“version”:”1.1″,”math”:”eln9x3″}

Find the slant asymptote, if any, of the graph of the rational function.  f(x) = x2+5x-3x+9{“version”:”1.1″,”math”:”f(x) = x2+5x-3x+9″}