ANSWER : 9 over 4
or 2 and 1/4
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*3 over 2 x 3 over 2 is 3/2 x 3/2* << this is for me to remember
Okay so multiplying fractions means for us to multiply across. That means if we line the fractions, we multiply. Like this 
  3     x     3
-----         -----                3 times 3 is = 9
  2     x     2                  2 times 2 is = 4
9 over 4 is the same thing as 2 and 1/4  << FRACTION     
                                                 ^^       
                                            WHOLE 
Hope I helped (:
 
        
                    
             
        
        
        
Answer:
3x + 21
Step-by-step explanation:
3(x + 7)           Distribute
3x + 21
 
        
             
        
        
        
Answer:
A. -45
Step-by-step explanation:
Since it says the dolphin dove 45 feet below sea level, it would mean that the integer is negative. 
 
        
                    
             
        
        
        
Answer:
1
Step-by-step explanation:
first, solve in the parentheses then solve from there:
1 + 4 = 5
50 - 5^2 / 25
50 - (5 x 5 ) /25
50 - 25 / 25
25 / 25
1