Out of 30 questions, Ahmad answer 12 of them incorrectly. What percent of the questions did he answer correctly?
1 answer:
First, you would need to determine how many questions he got correct.
30 - 12 = 18
Next, you would need to create an equation for this problem. Let x represent the unknown percentage.
= 
Now, you would cross multiply.
30x = 1,800
The last step would be to isolate the x. To do this, you would divide both sides of the equal sign by 30.
x = 60
Ahmad got 60% of the questions correct.
I hope this helps!
30 - 12 = 18
Next, you would need to create an equation for this problem. Let x represent the unknown percentage.
Now, you would cross multiply.
30x = 1,800
The last step would be to isolate the x. To do this, you would divide both sides of the equal sign by 30.
x = 60
Ahmad got 60% of the questions correct.
I hope this helps!
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Answer:
Option d. the initial amount of money placed in the savings account
Step-by-step explanation:
we have
This is a exponential function of the form
where
a is the initial value
r is the growth rate
(1+r) is the base
x is the number of years
f(x) is the amount of money in a savings account
In this problem we have
a=$3,005
r=0.03=3%
(1+r)=1.03
therefore
3,005 represent the initial value ( the amount of money for the value of x equal to zero)