sarahk21 sarahk21

13-09-2016
Mathematics

contestada

If f(x)=x^2+1 and g(x)=3x+1, find 2f(1)+3g(4)

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brightmoonligh2439 brightmoonligh2439

13-09-2016

finding f(1):
f(1)=1^2+1
=2
finding 2f(1):
2f(1)=2*2
=4
finding g(4) first:
g(4)=3*4+1
=13

finding 3g(4):
3g(4)=13*3
=39
now 2f(1)+3g(4)
=4+39
=43

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