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    1. The price of a dress shoe is $100 not $50. Note the column is labeled Price not Amount. You must multiply the quantity by the price to get amount spent. The correct answer I believe is 15% x $350 = $52.50.

    1. Classroom>Instruction Units>Exponents

      This is an evaluation of two different expressions based on plugging in values given for n. The question asks the test taker to find the smallest x which means finding the smallest y. The smallest y result is based on a negative exponent expression. 2^-n = 1/2^n. Guess and check all the values of n provided to find the lowest answer. The question asks for the lowest x so then evaluate all expressions to ultimately find the smallest x. The topic of negative exponents will be covered in the Exponents video tutorial in some detail.

  3. Can you help me on a couple of problems? I don’t understand #23, and #29 comes across as a proportional concept but when I try it on my own I keep getting the wrong answer. For #38 why is ab in each denominator, and for #46 wouldn’t it be 1:4?

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