Answer:
The equation can be used to determine the amount of money S(t) that her savings account has after t years is 
Step-by-step explanation:
A student invests $500 in a savings account
Principal = $500
Rate of interest = 4% = 0.04
We are supposed to find equation can be used to determine the amount of money S(t) that her savings account has after t years
Formula : 
Where A is the amount after t years =S(t)
t = time
r = rate of interest in decimals =0.04
P = Principal=500
Substitute the value in the formula :
So, 

Hence The equation can be used to determine the amount of money S(t) that her savings account has after t years is 
150
explain:
100/28*42=x which turns into x=150
Answer:

Step-by-step explanation:

Answer:
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Step-by-step explanation:
Answer:
The percentage decrease of the number of visitors to Alec's website from February to March is 14.8 %
Step-by-step explanation:
Explanation:
Percent decrease is a measure of percent change, which is the extent to which something loses value.
Step 1:
Find out the difference (decrease) between the number of visitors in march and February
Decrease =number of visitors in Fe bury- Number of vsitors in march
Decrease= 1,586- 1,352
Decrease =234
Step 2:
Divide the decrease by the original number of visitors and multiply the answer by 100.
Percent decrease= 
Percent decrease= 
Percent decrease= 
Percent decrease =14.88