Given that Dam had $23 to spend on three pens.
After buying them he had $11.
Let x be the cost of each pen.
The given statement can be written as follows.
Subtracting 23 from both sides, we get
Dividing both sides by -3, we get
Hence the cost of each pen is $4.
F(h(x)) means wherever you see x in the f(x) function you're gonna plug in the h(x) function:
f(h(x)) = (2x + 3) - 7
= 2x + 3 - 7
= 2x - 4
The answer should be A.not entirely sure though
Hope this helps
Answer:
x=-5 :)
Step-by-step explanation:
3x+15=0
-15 -15
3x=-15
/3 /3
x=-5
= root 45 - 3 root 20 + 4 root 5
= root 9 * root 5 - 3 * root 4 * root 5 + 4 root 5
=3 root 5 - 3 * 2 * root 5 + 4 root 5
= root 5 ( 3 - 6 + 4 )
= root 5 *1
= root 5