Someone is writing the answer so ill just give you this tip for whenever.
A negitive times a negitive is positive
a negative times a positive is negitive
and a positive times a positive is positive (just had to add it to be complete)
        
             
        
        
        
Answer:
38.5
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
Tutoring ABC - $50 sign up and $12 an hour
HW helps- $38 sign up and $15 an hour
  50                                    38
<u>+12</u>                                    <u>+15</u>
 62                                     53
<u>+12</u>                                   <u> +15</u>
 74                                     68                        Four months
<u>+12</u>                                  <u>+ 15</u>
 86                                     83
<u>+12</u>                                   <u>+15</u>
 98                                    98
 
        
             
        
        
        
10 and 2/3 = 32/3
32/3 x 8 = 256/3
256/3 = 85.33333333333 repeating
        
             
        
        
        
0.4%, turn it into a decimal, which is 0.004
0.004*100= 0.4