Answer:
Step-by-step explanation:
27 ÷ 90 = 0.3 = 0.30 = 30%
 
        
             
        
        
        
After 5 tests, her average was 88. To have a seven-test average of 90, the total must be:

Her average after 5 tests was 88. Her total score on the 5 tests is:

Subtract:

Find the average by dividing by 2:

Her average must be 95
 
        
             
        
        
        
Answer:
The distance from Gary's school to  the BART station is 564 yards
Step-by-step explanation:
Let
x ----> the distance  from Gary's school to the corner market 
y ----> the distance from Gary's school to  the BART station
we have

we know that
To find out the distance from Gary's school to  the BART station, multiply the distance from Gary's school to the corner market by 12
so

substitute the value of x

therefore
The distance from Gary's school to  the BART station is 564 yards
 
        
             
        
        
        
Answer:
79.6875 % If you can round, please do.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
x = 10
Step-by-step explanation:
If f(x) equals 3x-7 and also equals 23, then you can set 3x-7 equal to 23
3x - 7 = 23
3x = 30
x = 10