Fundamentals of Mathematics, 2008a

681
Exercise 11.10.8 (Solution on p. 692.)
(Section 11.2) −a 2 + 3a + 4, if a = 4.
Exercise 11.10.9 (Solution on p. 692.)
(Section 11.2) − (5 − x) 2 + 7 (m − x) + x − 2m, if x = 5 and m = 5.
For problems 10-12, simplify each expression by combining like terms.
Exercise 11.10.10 (Solution on p. 692.)
(Section 11.3) 6y + 5 − 2y + 1
Exercise 11.10.11 (Solution on p. 692.)
(Section 11.3) 14a − 3b + 5b − 6a − b
Exercise 11.10.12 (Solution on p. 692.)
(Section 11.3) 9x + 5y − 7 + 4x − 6y + 3 (−2)
For problems 13-22, solve each equation.
Exercise 11.10.13 (Solution on p. 693.)
(Section 11.4) x + 7 = 15
Exercise 11.10.14 (Solution on p. 693.)
(Section 11.4) y − 6 = 2
Exercise 11.10.15 (Solution on p. 693.)
(Section 11.4) m + 8 = −1
Exercise 11.10.16 (Solution on p. 693.)
(Section 11.4) −5 + a = −4
Exercise 11.10.17 (Solution on p. 693.)
(Section 11.5) 4x = 104
Exercise 11.10.18 (Solution on p. 693.)
(Section 11.5) 6y + 3 = −21
Exercise 11.10.19 (Solution on p. 693.)
(Section 11.5) 5m 6 = 10 3
Exercise 11.10.20 (Solution on p. 693.)
(Section 11.5) 7y 8
+ 1 4 = −13
4
Exercise 11.10.21 (Solution on p. 693.)
(Section 11.5) 6x + 5 = 4x − 11
Exercise 11.10.22 (Solution on p. 693.)
(Section 11.5) 4y − 8 − 6y = 3y + 1
Exercise 11.10.23 (Solution on p. 693.)
(Section 11.6 and Section 11.7) Three consecutive even integers add to -36. What are they?
Exercise 11.10.24 (Solution on p. 693.)
(Section 11.6 and Section 11.7) The perimeter of a rectangle is 38 feet. Find the length and width
of the rectangle if the length is 5 feet less than three times the width.
Exercise 11.10.25 (Solution on p. 693.)
(Section 11.6 and Section 11.7) Four numbers add to -2. The second number is three more than
twice the negative of the rst number. The third number is six less than the rst number. The
fourth number is eleven less than twice the rst number. Find the numbers.
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