Jamaal has 20 models of cars and planes. He has 3 times as many cars as planes. What is the ratio of cars to total models? Mutiply its what 20X20X20
        
                    
             
        
        
        
Simple interest, I = 101.40
Time, t = 6 years
interest, i = 1.3%
Interest, I=Pit, rearrange
Principal, P=I/(it)=101.40/(6*0.013)=1300
        
             
        
        
        
-4(3m-3)+(-10+8m)
12m+12-1+8m
12m+8m = 20m
+12 -1= +11
answer: 20m+11
*note negative times a negative equals positive and negative times positive is negative 
first: you multiply -4 by 3m which is -12m.
second: you multiply -4 by -3 which is +12
third: find the invisible which is 1. (located right here: +(1) (-10+8m)
fourth: multiply invisible 1 by -10 which is -10
fifth: multiply invisible one by +8m which is +8m 
sixth: combine like terms
seventh: answer
 
        
             
        
        
        
Answer:
Step-by-step explanation:
2
(
2
x
−
1
)
+
7
<
13
 
Expand LHS 
→
4
x
−
2
+
7
<
13
4
x
+
5
<
13
4
x
<
13
−
5
4
x
<
8
Divide through by 
4
→
x
<
2
x
<
2
 is represented on the real line by the interval 
(
−
∞
,
2
)
This can be represented on the 
x
y
−
plane by the area to the left of the vertical line 
x
=
2
 as graph below.
graph{2(2x-1)+7<13 [-10, 10, -5, 5]}
 
        
             
        
        
        
Answer:

Step-by-step explanation:

All we can do here is combine like terms (add those that have the same the same exponent)

Good luck!