5k3 - 3k + 7 - (<span>-2k3 + k2 - 9)
= </span> 5k3 - 3k + 7 + 2k3 - k2 + 9
= 7k3 - k2 - 3k + 16
The answer is B.)
This is because Since there is one value of y
for every value of x in (-1,-3),(3,-7),(7,-11),(9,-13)
, this <u>relation</u> is a <u>function</u>.
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Da answer should be A. 40 feet hope it's da right answer
0.04(30h) is the part. Because 0.04 represents 4%, we know that it should be the tax rate. 30h represents the cost for every hour, so we know that that's not the correct answer.
Let n = the number of nickels that Ari has.
Let p = the number of pennies that Ari has.
The total number of coins she has is 22.
n + p = 22
We have our first equation... But we another one to solve this.
Each penny is going to be $0.01 and a nickel is work $0.05.
And the total is $0.54
Our second equation. 0.05n + 0.01p = 0.54
n + p = 22
0.05n + 0.01p = 0.54
Multiply the top by -0.05
-0.05n - 0.05p = -1.1
0.05n + 0.01p = 0.54
The n terms cancel out.
-0.04p = -0.56
p = 14
Substitute p back into the top equation.
n + 14 = 22
n = 8
So, Ari has 8 nickels and 14 pennies.