math sat2 level 1 questiooon

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1

<p>if f(2x+3) = 4x-7 for all values of x, for what value of t is f(t) = 1 ?
HELP ME :D</p>

2

<p>4x-7 = 1
x=2
f(2*2+3) = 1
f(7)=1
t=7</p>

3

<p>f(2x+3)=2(2x+3)-13
Or, f(x)=2x-13
Or,f(t)=2t-13
Or,1=2t-13
Therefore, t=7. :)</p>

4

<p>Thankssss alot :d</p>

5

<p>One more (similar to Savvy’s):
t = 2x+3, x = (t-3)/2
f(t) = 4((t-3)/2) - 7 = 2t - 13 = 1
t =7
Many roads, one destination. :)</p>