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″}

Graph the parabola. x2=-20y{“version”:”1.1″,”math”:”x2=-20y”}

Use vertices and asymptotes to graph the hyperbola. Find the equations of the asymptotes.  4×2-9y2=36{“version”:”1.1″,”math”:”4×2-9y2=36″}

Use the compound interest formulas A = P (1+rn)nt and A = Pert{“version”:”1.1″,”math”:”A = P (1+rn)nt and A = Pert”} to solve.  Suppose that you have $3000 to invest. Which investment yields the greater return over 9 years: 5.4% compounded monthly or 5.5% compounded quarterly?

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)”}

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

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.)

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″}