Answer:
The answer is A.
Step-by-step explanation:
Step-by-step explanation:
f(3)=?
f(x)=2x+5
put x=3,
f(3)=2(3)+5=6+5=11
------------
g(2)=?
g(x)=x^2-3
put x=2,
g(2)=2^2-3=4-3=1
-----------------
g(f(-1))=?
g(x)=x^2-3
and f(-1)=2(-1)+5= -2+5=3
so g(f(-1))=3^2-3=9-3=6
----------------
f(g(-1))=?
f(x)=2x+5
g(x)=g(-1)=(-1)^2-3=1-3= -2
f(g(-1))=2(-2)+5= -4+5=1
----------------
g(f(x))=?
g(x)= x^2-3
put x=f(x),
g(f(x))=f(x)^2-3=(2x+5)^2-3=4x+25+20x-3=24x+25
Answer:
27. 18.62
28. 200%
29. 136
30. 50
31. 12.5%
32. 750
33. 5.4
Step-by-step explanation:
Answer:
Man has 9 Nickels and 7 dimes.
Step-by-step explanation:
Let Number of dimes be x
and Number of Nickels be y
As Per given data he has two more nickels than dimes.
As we know that
1
= 100 cent
1 nickel is worth = 5 cents = 
= 0.05
1 dime is worth = 10 cents = 
0 .1
According to given data he has 
total nickel and dimes
So the equation becomes,
but 
Substituting value of x in equation 
we get
Man has 9 Nickels and 7 dimes.
