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The problems you missed are listed below with answers / explanations.  Look over the explanation for each problem so you can understand why you missed it!

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'); resetdisplay(); for(var i = 0; i <10; i++) { ganswer[i] = prompt(question[i],""); if (ganswer[i] == "quit" || ganswer[i] == "QUIT" || ganswer[i] == "Quit") { break; } q++; if (ganswer[i] == answer[i]) { c++; } else { rightans[i] = 0; w++; } resetdisplay(); } for(var i = 0; i < 10; i++) { if (rightans[i] == 0) { expl = expl + explain[i]; } } parent.frames[0].document.write(expl); parent.frames[0].document.write("
"); } question[0] = 'Simplify: -(3)^3'; question[1] = 'Simplify: (-3)^4'; question[2] = 'Simplify: (-2)^3'; question[3] = 'Simplify: (x^3)(y^2)(x^5)(z^2)'; question[4] = 'Simplify: xy(z^2)(y^5)(x^3)'; question[5] = 'Simplify: z(y^2)(x^3)(z^5)(x^2)(y^5)'; question[6] = 'Simplify: (y^3)(z^2)(x^2)(y^4)'; question[7] = 'Simplify: (z^2)(x^3)y(z^4)(x^200)'; question[8] = 'Solve for x: x^3 = 27'; question[9] = 'Solve for x: 3^x = 81'; answer[0] = '-27'; answer[1] = '81'; answer[2] = '-8'; answer[3] = '(x^8)(y^2)(z^2)'; answer[4] = '(x^4)(y^6)(z^2)'; answer[5] = '(x^5)(y^7)(z^6)'; answer[6] = '(x^2)(y^7)(z^2)'; answer[7] = '(x^203)y(z^6)'; answer[8] = '3'; answer[9] = '4'; explain[0] = '#1

-(3)^3 = -(3)(3)(3) = -27

'; explain[1] = '#2

(-3)^4 = (-3)(-3)(-3)(-3) = 81

'; explain[2] = '#3

(-2)^3 = (-2)(-2)(-2) = -8

'; explain[3] = '#4

(x^3)(y^2)(x^5)(z^2)

Use the Product Theorem for Exponenets, which says if m and n are real numbers and x does not equal 0, x^m * x^n = x^(m+n).

(Remembering proper order and notation for this quiz)
(x^8)(y^2)(z^2)

'; explain[4] = '#5

xy(z^2)(y^5)(x^3)

Use the Product Theorem for Exponents which says if m and n are real numbers and x does not equal 0, x^m * x^n = x^(m+n).

(Remembering proper order and notation for this quiz)
(x^4)(y^6)(z^2)

'; explain[5] = '#6

z(y^2)(x^3)(z^5)(x^2)(y^5)

Use the Product Theorem for Exponents, which says if m and n are real numbers and x does not equal 0, x^m * x^n = x^(m+n)

(Remembering proper order and notation for this quiz)
(x^5)(y^7)(z^6)

'; explain[6] = '#7

(y^3)(z^2)(x^2)(y^4)

Use the Product Theorem for Exponents, which says if m and n are real numbers and x does not equal 0, x^m * x^n = x^(m+n).

(Remembering proper order and notation for this quiz)
(x^2)(y^7)(z^2)

'; explain[7] = '#8

(z^2)(x^3)y(z^4)(x^200)

Use the Product Theorem for Exponents, which says if m and n are real numbers and x does not equal 0, x^m * x^n = x^(m+n).

(Remembering proper order and notation for this quiz)
(x^203)y(z^6)

'; explain[8] = '#9

x^3 = 27

Take the cube root of each side.

x = 3

'; explain[9] = '#10

3^x = 81

Take the xth root of each side.

3 = xRT(81)

The 4th root of 81 is equal to 3.

x = 4

'; rightans[0] = 1; rightans[1] = 1; rightans[2] = 1; rightans[3] = 1; rightans[4] = 1; rightans[5] = 1; rightans[6] = 1; rightans[7] = 1; rightans[8] = 1; rightans[9] = 1; //-->