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Mathematics 21 Online
OpenStudy (anonymous):

If x + 1 = 7, what is the value of x2 + 2x + 1 ? a.36 b.37 c.48 d.49 e.81

OpenStudy (luigi0210):

solve for x first: x+1=7

OpenStudy (anonymous):

x=6

OpenStudy (luigi0210):

good, now plug that in for x and solve :) f(6)=(6)^2+2(6)+1

OpenStudy (anonymous):

49

OpenStudy (luigi0210):

there you go :P

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