Answer:
-50x^2+30x-4
Step-by-step explanation:
 
        
             
        
        
        
The number of matinee movies attended is 4.
The number of a evening show movies attended is 2.
<u>Step-by-step explanation:</u>
- Let x represent the number of matinee movies attended.
- Let y represent  the number of evening show movies attended.
- Alejandro went to see a total of 6 movies.
Therefore, from the given data the equation can be framed as :
⇒ x + y = 6  ----------(1)
- The cost of a matinee is $7.
- The cost of an evening show is $12.
- Alejandro spent a total of $52.
Therefore, from the given data the equation can be framed as :
⇒ 7x + `12y = 52  ---------(2)
<u>To solve the equations for x and y values :</u>
Mulitply eq (1) and by 7 and subtract eq (2) from eq (1),
   7x + 7y = 42
- <u>(7x + 12y = 52)</u>
   <u>     - 5y = - 10 </u>
⇒ y = 10/5
⇒ y = 2
The number of a evening show movies attended is 2.
Substitute y=2 in eq (1),
⇒ x+2 = 6
⇒ x = 6-2
⇒ x = 4
The number of matinee movies attended is 4.
 
        
             
        
        
        
X=9
A) 3x-7=34
 3x= 34+7
 3x= 41
 x= 41/3
 
B) x-9=1
x=1+9
x=10
C) dude what is this
D) 4x+5=41
    4x=41-5
    4x=36
    x=36/4
    x=9 YAYY
Hope it helps!
#MissionExam001
        
             
        
        
        
Answer:
lowest score a college graduate must earn to qualify for a responsible position is 578 
correct option is D. 578
Step-by-step explanation:
given data 
mean = 500 
standard deviation = 50
distribution = 6 %
to find out 
What is the lowest score a college graduate must earn to qualify for a responsible position
solution
we know that here Probability P that is express as 
P ( Z > x ) = 100% - 6%      .....................1
so with the help of normal table
here value of Z is =  1.55 from cumulative probability 0.94
so by z score formula here x will be 
x = z × standard deviation +  mean    ................2 
so put here value 
x = 1.55 × 50 + 500
x = 577.7387 ~ 578 
so lowest score a college graduate must earn to qualify for a responsible position is 578