Given: f(x) = 5x + 1 and g(x) = 3x + 7
Evaluate: (2f - 7g)(-2)
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2f = 2(5x+1) = 10x + 2
7g = 7(3x +7) = 21x + 49
2f - 7g = 10x+2 - 21x - 49 = - 11x - 47
(2f - 7g)(-2) = -11(-2) - 47 = 22-47 = - 25
7g = 7(3x +7) = 21x + 49
2f - 7g = 10x+2 - 21x - 49 = - 11x - 47
(2f - 7g)(-2) = -11(-2) - 47 = 22-47 = - 25
seymasubasib:
are u sure
kinda ... I never came across such sum before
but I guess that -2 is the value of variable
whats -25 then
thats the answer according to what I did
will u send me this que again
its only 2 step. sol
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