Question

for the following functions Find x such that f(x)=10

a)f(x)=2x+6
b)f(x)=-5x-3
c)f(x)=-x+9
d)f(x)=-2x+4

Answer 1

all you have to do is plug in the 10 for each x :O

Answer 2

soooo.... for a) 2(10) + 6 = 26
x=26

Answer 3

actually your job is to solve
\[10=2x+6\]

Answer 4

\[10=2x+6\iff4=2x\iff x=2\] for the first one
others are similar

Answer 5

I dont get it...