X= cost per cherry pie
y= cost per pumpkin pie
NICOLE 
1x + 9y= $60
LISA
11x + 4y= $90
STEP 1 
multiply Nicole's equation by -11 
-11(1x + 9y)= -11($60)
multiply -11 by all terms 
(-11 * x) + (-11 * 9y)= (-11 * 60)
-11x - 99y= -660
STEP 2
add Nicole's new equation from step 1 to Lisa's equation to solve for y (using the elimination method) 
-11x - 99y= -660
11x + 4y= 90
the x terms "cancel out"
-95y= -570
divide both sides by -95
y= $6 per pumpkin pie
STEP 3
substitute y value into either original equation to solve for x
x + 9y= $60
x + 9(6)= 60
x + 54= 60
subtract 54 from both sides
x= $6 per cherry pie
CHECK
11x + 4y= $90
11(6) + 4(6)= 90
66 + 24= 90
90= 90
ANSWER: Each cherry pie costs $6 and each pumpkin pie costs $6.
Hope this helps! :)
        
             
        
        
        
Yes it is congruent to5x-1
        
             
        
        
        
324 pounds
24% =  = 0.24
 = 0.24
0.24 × 1350 = 324 pounds
He should collect 324 more pounds of waste paper
 
        
             
        
        
        
Answer:
x = 35 feet.
Step-by-step explanation:
Given that,
The height of the person is 5 feet.
The height of the flag and the eye is (x-5) feet.
We can calculate using trigonometry.

So, the value of x is equal to 35 feet. The correct option is (c).