A)
5a + 9
B)
5a + 1
C)
a + 6
D)
a + 9
2007-06-28 06:17:51 · 11 answers · asked by angie_noah06 2 in Science & Mathematics ➔ Mathematics
f(x) = 5x-1
for f(a+2), x=a+2, which means:
f(a+2)=5(a+2)-1
=5a+10-1
=5a+9
so, the answer is A
2007-06-28 06:21:16 · answer #1 · answered by BrightEyes 5 · 0⤊ 0⤋
The answer is a) 5a + 9, because if you plug in a+2 for x. Then this will be your given answer for the function f(x)
2007-06-28 06:21:51 · answer #2 · answered by Frank R 1 · 0⤊ 0⤋
A
Plug in (a+2) in for x:
5(a+2)-1
Distribute:
5a+5*2-1
Solve:
5a+9
2007-06-28 06:22:34 · answer #3 · answered by ooorah 6 · 0⤊ 0⤋
f(a + 2) = 5.(a + 2) - 1 = 5a + 9
OPTION A)
2007-07-01 21:11:49 · answer #4 · answered by Como 7 · 0⤊ 0⤋
5(a+2) -1 = 5a + 10 -1 = 5a+9
Do your homework.
2007-06-28 06:23:45 · answer #5 · answered by mazdamandan 4 · 0⤊ 0⤋
f(x)=5x-1
f(a+2)=5(a+2)-1=5a+10-1=5a+9
2007-06-28 06:25:42 · answer #6 · answered by N E 7 · 0⤊ 0⤋
f(x) = 5x - 1
f(a + 2) = 5(a + 2) - 1
f(a + 2) = 5a + 10 - 1
f(a + 2) = 5a + 9
2007-06-28 06:23:15 · answer #7 · answered by Anonymous · 0⤊ 0⤋
Okay so you change it to 5(a+2)-1
Then you simplify.
5a+10-1
5a+9
THE ANSWER IS A.)
2007-06-28 06:23:55 · answer #8 · answered by Anonymous · 0⤊ 0⤋
It's A, isn't it? It's been over 3 years since my last college math class, and never have I actually had any practical reason for learning these sort of math problems.
2007-06-28 06:21:40 · answer #9 · answered by Anonymous · 0⤊ 1⤋
Replace the x's with (a+2), multiply, and subtract until you get one that matches one of the answer choices.
Don't rely on Yahoo Answers to do ALL of your math for you. ;)
2007-06-28 06:23:22 · answer #10 · answered by Alice 2 · 0⤊ 0⤋