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Pretest2.1-3.3

# Pretest2.1-3.3 - J Frewing Math 35 Name Date Pretest...

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J. Frewing Name:_________________ Math 35 Date :_________________ Pretest: 2.1-3.3 1. Solve each equation: a. 2 3(4 2 ) 2( 3) 2 k k k - - - = - + b. [6 (4 8)] 9 (6 3) x x x - - + = + + c. 3 1 5 5 4 3 6 x x x - = - d. 3 2 4 2 7 5 x x + + - = e. .006( 2) .007 .009 x x + = + f. .08 .12(260 ) .48 x x x + - = g. 3 5( 4) 9 11 15 x x x - + + = - + h. 4(2 7) 2 25 3(2 1) d d d + = + + + 2. Solve each formula for the specified variable: a. A LW = for W b. 2 2 P L W = + for L c. 2 C r π = for r d. 1 2 A bh = for h e. k DF dF + = for F f. 7 8 11 x y z - + = for y g. 2 3 kT g = for T h. A Bc Dc F + = + for c 3. What is 40% of 260? 4. 35 is what percent of 400? (round your answer to the nearest whole percent) Solve each of the following word problems: Mixing Problems/Percentage: 5. A chemical solution contains 4% salt. How much salt is in 4.5 ml of solution? 6. A pharmacist has 20 L of a 10% drug solution. How many liters of 5 % solution must be added to get a mixture that is 8% drug? 7. You want to make a trail mix that costs \$12.50. If you have 2 lbs of peanuts that cost \$2 per lb and the M&M cost \$5.25 per lb. How many lbs of M&M’s should you purchase to satisfy the cost.

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