2x+6y+(9x-6y)=20+24
11x=44
X=4
Y=2
I hope this helped!
Answer:
B) 
E) 
Step-by-step explanation:
Given expression:
2% of 90
Evaluating the expression:

⇒ 
⇒ 
Evaluating each choices given to check if the value matches with the value of given expression.
A) 
⇒ 
B) 
⇒ 
C) 
⇒ 
D) 
⇒ 180
E) 
⇒ 
⇒ 
∴ We see that the value of expressions in options B and E matches with the value of the given expression i.e. 1.8
Answer:
Step-by-step explanation:

_____________________

Multiply: 1 * 1 * 1 = 1

Multiply: 4 * 4* 4= 64

Answer:
C.
f(x) = 0.34 + 0.21(x – 1); $.97
Step-by-step explanation:
In 2002, the price of mailing a letter was $.34 for the first ounce and $.21 for each ounce after the first ounce. Write a rule to describe the function.
---------------------------------------
Price = 0.34 + 0.21(x-1) where x is the weight of the item in ounces.
Let +x+ = weight of the letter in ounces
Let +P+ = the price of mailing the letter in dollars
---------------------------------------
+P+=+.34+%2B+.21%2A%28+x+-+1+%29+
( +x+%3E=+1+ )
-----------------------------
A 4-ounce letter costs
+P+=+.34+%2B++%28+4+-+1+%29%2A.21+
+P+=+.34+%2B+.63+
+P+=+.97+
It costs $.97