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anonymous
 one year ago
The function f(x) = 2x^2 + 3x + 5, when evaluated, gives a value of 19. What is the function’s input value?
A. 1
b. 1
C. 2
D. 2
E. 3
anonymous
 one year ago
The function f(x) = 2x^2 + 3x + 5, when evaluated, gives a value of 19. What is the function’s input value? A. 1 b. 1 C. 2 D. 2 E. 3

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campbell_st
 one year ago
Best ResponseYou've already chosen the best response.0have you substituted any values to check them...?

campbell_st
 one year ago
Best ResponseYou've already chosen the best response.0as an example x= 1 y = 2(1)^2 + 3(1) + 5 = 10 so its not x = 1

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0o that's all i have to do?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@campbell_st im lost i thought i had it but i dont

campbell_st
 one year ago
Best ResponseYou've already chosen the best response.0ok so the next value is x = 1 substitute that y = 2(1)^2 + 3(1) + 5 you need a little care here as squaring a negative gives a positive so y = 2  3 + 5 y = 4 so it't not x = 1 just repeat the process
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