Answer
(0.8) (120)
80/100 is 80%
        
             
        
        
        
I believe it is 28 dimes
.25 × 30 = 7.50
.10 × 190 = 19
19 + 7.50 = 26.50
Then, you add 4 more quarters which is 27.50 and the 28 dime makes it 27.60
        
             
        
        
        
Answer:
4x-20 is the same as x+x+x+x-20
 
        
                    
             
        
        
        
Answer:
f (x) = 4,500 + 250x; 24 months
Step-by-step explanation:
Because 10,500 - 4,500 = 6,000
6,000 / 250 = 24
Hope this helped
 
        
             
        
        
        
The quadratic equation is given by:
y = 3x² + 10x - 8
The standard equation of a parabola is given by:
y = ax² + bx + c
Where a, b, c are constants
At point (4, 80):
80 = a(4)² + b(4) + c
16a + 4b + c = 80     (1)
At point (-3, -11):
-11 = a(-3)² + b(-3) + c
9a - 3b + c = -11     (2)
At point (-1, -15):
-15 = a(-1)² + b(-1) + c
a - b + c = -15     (3)
Solving equations 1, 2 and 3 simultaneously gives:
a = 3, b = 10, c = -8
Therefore the quadratic equation becomes:
y = 3x² + 10x - 8
Find out more on quadratic equation at: brainly.com/question/1214333