Sec 1.7-Focus

# Sec 1.7-Focus - 9% interest. How much interest did the...

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Formulas page 1.7 - 15 Section 1.7 Focus Exercises 1. Evaluate the numerical value of each formula with the given replacement values. a) z = x – m s x = 16 b) A = a + b + c 3 a = 13 m = 25 b = 41 s = 3 c = 33 c) a =  c 2 – b 2 c = 13 d) A = 1 2 · b·h b = 5 b = 12 h = 8 e) P = 2·L + 2·W L = 13 f) r = d t d = 24 W = 8 t = 3 4 g) A = 1 2 ·h·(b + B) h = 3 h) I = P·r·t P = 500 b = 5 r = .08 B = 7 t = 1 2 i) m = y – w x – v y = 1 j) c =  a 2 + b 2 a = - 4 w = - 8 b = 3 x = - 6 v = (- 3)

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Formulas page 1.7 - 16 3. Find the simple interest based on the given information. I = P·r·t a) Sally put \$800 in a special account that gained
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Unformatted text preview: 9% interest. How much interest did the account gain after 1 year? b) Mark put \$5,000 in a special account that gained 6% interest. How much interest did the account gain after 8 months? 3. April needed to travel 335 miles by car. She was able to make the trip in 5 hours. What was her average rate of speed? Use rate = distance time 4. Reggie needed to go 9 miles on his bike. He was able to make the trip in 3 4 hours. What was his average rate of speed? Use rate = distance time...
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## This note was uploaded on 01/13/2012 for the course MATH 52 taught by Professor Janetfrewing during the Fall '10 term at Riverside Community College.

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Sec 1.7-Focus - 9% interest. How much interest did the...

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