College Algebra K /DC Friday, 05 September 2014

1. College Algebra K/DCFriday, 05 September 2014 • OBJECTIVETSW review for Monday’s test covering algebra review. • ASSIGNMENTS DUE MONDAY • WSFormulas • WS Assorted Problems • Pick up papers from side tables. • √ = 100

2. WS Fractions & Proportions 2) 6 7/8 yd2 4)4/3 6) 51 1/6lb 8)a)31/45 b) 13,500 lb 10)3/2000 12) 230,400 letters 14) 7.8 gal 16) 2400 lb 18) 3375 students 20) 75 cm 1) 14 hours 3)26/21 5) 9 ¾ yds 7) 6 times 9) 14 gal 11) 20 mi 13) 18 feet 15) $5.20 17) 128 2/3 min 19) 10 1/8 mi

3. WSPercents 1) 45% 10) 2 students 2) $275 11) 12 ft x 15 ft 3) $59.84 12) $80 4) $8000 13) 30.77% 5) $48,000 14) 300 6) $35,880 15) $475.90 7) 3.15 cm x 1.35 cm 16) a) $49,170.73 • 30.44% b) $65,559 • 33.96%

4. Test Topics:Algebra Review Types of questions: • Pythagorean Theorem • Proportions • Rate of discount and percents • Working with fractions • “Test Average” problems • Ratio problems • Problems requiring conversion (ft yd, etc.) • Sales tax • Formulas

5. 1024 black pigs 2304 pink pigs Example 1:On Farmer John’s pig farm, he has black pigs and pink pigs. The ratio of black pigs to pink pigs is 4 to 9. He has a total of 3328 pigs. How many of each color does he have? Example 2:A DVD player, originally priced at $239.99, was marked down $100. What percent was the DVD player marked down? Example 3:A student in College Algebra K earns test scores of 83, 72, 95, 92, and 88. She wants to have a test average of 90 for the semester. What must she average on the last 4 tests to have exactly a 90 average? 41.67% 95

6. 1 sqyd = 9 sqft Example 4:How many square feet are in one square yard? Example 5:One gallon of paint covers 700 sq ft. Anthony wants to paint his rectangular deck measuring 75 ft by 30 ft with two coats of paint. How many gallons of paint will he need? (He can have parts of a gallon.) Example 6:If he goes to the paint store and can purchase only full gallons and each gallon costs $7.99 with 8.25% sales tax, how much will he spend? 6.43 gal $60.54

7. WS Assorted Problems 1)7200 ft26)58 soldiers 2)16 ft7)$53.55 3)$437.508)82.5 lbs 4)$123.089)$59.84 5)4/310)$8000