7. If f(x) = x+3 and g(x) = x2 + 8x + 15. y = f(x)* g(x) a. y = x² + 11x +39 b. y = с. у = y d. x3 +11x2 + 39x+45 2x3 + 11x² + 42x+2 = x² - 3x-51 8. Let u(x) = x + 3 and v(x) = x² - 9. For which value(s) of x is y a. x = 3 b. x = 9 C. x = -3 d. x = 3 and x = -3 u(x) = undefined? v(x)

7. If f(x) = x+3 and g(x) = x2 + 8x + 15. y = f(x)* g(x) a. y = x² + 11x +39 b. y = с. у = y d. x3 +11x2 + 39x+45 2x3 + 11x² + 42x+2 = x² - 3x-51 8. Let u(x) = x + 3 and v(x) = x² - 9. For which value(s) of x is y a. x = 3 b. x = 9 C. x = -3 d. x = 3 and x = -3 u(x) = undefined? v(x)

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter8: Introduction To Functions

Section8.8: Linear And Quadratic Functions

Problem 4ST

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Question

Please help on all asked questions. Please show all work and steps. Please circle the final answer.

7. If f(x) = x+3 and g(x) = x2 + 8x + 15. y = f(x)* g(x)
a. y = x² + 11x +39
b. y =
с. у
=
y
d.
x3 +11x2 + 39x+45
2x3 + 11x² + 42x+2
= x² - 3x-51
8. Let u(x) = x + 3 and v(x) = x² - 9. For which value(s) of x is y
a. x = 3
b. x = 9
C. x = -3
d. x = 3 and x = -3
u(x)
=
undefined?
v(x)

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