ANSWER
A.
EXPLANATION
The given inequality is
We add the additive inverse of 18, which is -18 to both sides of the equation to get,
Recall that,
This implies that,
We simplify to get,
We now divide both sides by 10 to obtain,
We cancel out the common factors to get,
The correct answer is A.
Answer:
D or B
Step-by-step explanation:
because I learned it but I forgot so I think thats it
Answer:
1/25
Step-by-step explanation:
f(x)=5^x
f(-2)=?
substitute -2 in place of x
f(-2)=5^-2
=1/5^2
=1/25
Answer:
-1/12
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(6-3)/(-21-15)
m=3/-36
simplify
m=-1/12
Answer:
a. 0.9
b. y=0.9x, where y is the cost and x is the amount of songs.
c. She should use the package price from the online music vendor (the first option)
Step-by-step explanation:
a.
The constant of proportionality is k in y=kx. Take a point form the graph ( lets say (5,4.5) ) and sub it in:
y=kx
4.5=5k
k=0.9
b.
The equation of a line is y=kx when it passes though the origin (which this one does). We know the value of k, so our equation is y=0.9x, where y is the cost and x is the amount of songs.
c.
Susan downloads 60 songs monthly. We're being asked if it would be cheaper to use the service where you play $58 total, or $0.90 per song. So for the package price, let's figure out the total cost (y) for 60 songs (x=60):
y=0.9x
y=0.9(60)=$54
So it would be cheaper to use the package price from the online music vendor.
