Answer: 33
Step-by-step explanation:
(f of g)(2) = f(g(2))
g(2) = -2(2) = -4
f(-4) = (-4)^2 - 3(-4) + 5 =
16 - - 12 + 5 =
16 + 17 =
33
₇P₅ is a permutation. you can find this setting in the statistics menu of your scientific calculator (i think).
If you don't have a scientific calculator, you can use the following formula:
nPr = 
₇P₅ = 
= 
= 
= 7 * 6 * 5 * 4 * 3
= 2520
Answer: C
Answer:
Option A - $ 40.00 - $9.50 - $4.25 - $5.00
Step-by-step explanation:
Given : Tu went to the movies. he bought 2 tickets for $ 9.50 each, popcorn for $ 5.00, and 2 drinks for $ 4.25 each. He give the clerk two $ 20.00 bills.
To find : Which expression can not be used to find the amount of changes Tu got?
Solution :
He give the clerk two $ 20.00 bills i.e.
or 40
He bought 2 tickets for $ 9.50 each i.e.
or -9.50-9.50
Popcorn for $ 5.00 i.e. 
2 drinks for $ 4.25 each i.e.
or -4.35-4.25
The expression can not be used to find the amount of changes Tu got is
' $ 40.00 - $9.50 - $4.25 - $5.00'.
Therefore, option A is correct.
Let k be a constant of proportionality. We can use the given information to write two equations:
24 = k/5 and 12 = k/10.
Solving for k gives k = 120 in both cases.
Let R be the unknown resistance when the current is 15 amperes:
15 = 120/R.
R = 120/15
R = 8 ohms.