The solution of the equation x2+7x is 0, -7 using the quadratic formula.
Step-by-step explanation:
x2 + 7x = 0
-b  ± √
b2 - 4(ac)/ 2a
substitution, 
a = 1, b = 7, c = 0
= -7  ± √(7)2 - 4(1 x 0) / 2 x 1
= - 7  
± 7 / 2
x = 0 , -7
 
        
             
        
        
        
Answer:
4
Step-by-step explanation:
divide the numbers 
subtract the numbers 
final answer: 
= 4 
 
        
             
        
        
        
Answer:  The range of a set of data is the difference between the highest and lowest values in the set. To find the range, first order the data from least to greatest. Then subtract the smallest value from the largest value in the set.
 
        
             
        
        
        
Answer:
- The store sold 733 gallons of ice cream last month.
- The store sold 748 pounds of broccoli last month.
Step-by-step explanation:
Given




Solving (a): Gallons of Ice Cream
<em>Let Gallons sold last month be G1; Gallons sold this month be G2;</em>
The relationship between both is:

Substitute 623 for G2




Divide through by 0.85



Solving (b): Pounds of Broccoli
<em>Let Pounds sold last month be P1; Pounds sold this month be P2;</em>
The relationship between both is:

Substitute 912 for P2




Divide through by 1.22


