Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 4 - An Introduction to Functions - 4-5 Writing a Function Rule - Practice and Problem-Solving Exercises - Page 271: 10


a = $\frac{3}{5}$b - 7

Work Step by Step

the answer is a = $\frac{3}{5}$b - 7 because the question states that a equals 7 less than the three fifths of b. So to write the function you would multiply 'b' by $\frac{3}{5}$ since it is three fifths of 'b' which means that you have to multiply 'b' by $\frac{3}{5}$ and thus it is $\frac{3}{5}$b. Also you have to subtract 7 from $\frac{3}{5}$b because 'a' is 7 less than three fifths of b. Therefore the function is a = $\frac{3}{5}$b - 7
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