A) -a-7
B) -a-3
C) a-4
D) a-7
Can someone help me please? I don't get it
2007-09-21 15:16:20 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Simple substitute a+2 for x in the original equation:
f(a+2)=-(a+2)-5
=-a-2-5
=-a-7
Therefore the answer is A.
Note the negative out the front of (a+2) implies a multiplication by -1, hence -a-2.
2007-09-21 15:25:28 · answer #1 · answered by skibz26 4 · 0⤊ 0⤋
f(a+2)=-(a+2)-5
=-a-2-5
=-a-7
2007-09-21 15:43:01 · answer #2 · answered by ijoeboy_05 2 · 0⤊ 0⤋
What you do is you substitute (a+2) as x:
f(a+2) = -(a+2)-5 =
-a - 2 - 5 =
-a - 7
2007-09-21 15:19:12 · answer #3 · answered by AibohphobiA 4 · 0⤊ 0⤋
Just substitute (a+2) into the the function given.
f(x)=-x-5, f(a+2)=-(a+2)-5
=-a-2-5
=-(a+7)
=-a-7
D should be the answer.
2007-09-21 15:23:19 · answer #4 · answered by Anonymous · 0⤊ 0⤋
plug in a + 2 for x
-x - 5
-(a+2) - 5; distribute the negative
-a - 2 - 5; combine like terms
-a - 7
choice A
2007-09-21 15:18:55 · answer #5 · answered by sfroggy5 6 · 3⤊ 1⤋
plug in the exaples for x
A) is -(-a-7)-5 = a+2
b is a-2
c is a-1
and d is -a +2
remember that a negative times a negative is a positive
2007-09-21 15:23:48 · answer #6 · answered by crucita 2 · 0⤊ 0⤋
the answer is A
f(x) = -x-5
so, f(a+2)=-(a+2)-5
=-a-7
2007-09-21 15:28:05 · answer #7 · answered by u chi 2 · 0⤊ 0⤋
A) a+2
B) a-2
C) -a-1
D) -a+2
Title Question) -a-7
2007-09-21 15:20:25 · answer #8 · answered by Anonymous · 0⤊ 1⤋
f ( x ) = - x - 5
f ( a + 2 ) = - (a + 2) - 5 = - a - 7
ANSWER A)
2007-09-21 19:44:40 · answer #9 · answered by Como 7 · 2⤊ 0⤋