Braden improves his score with each practice quiz he takes. The number of incorrect answers can be represented by the expression 20 – 5n where n represents the number of practice quizzes he has taken. How many answers will he get incorrect after taking 2 practice quizzes?

15

13

10

5

Question

Braden improves his score with each practice quiz he takes. The number of incorrect answers can be represented by the expression 20 – 5n where n represents the number of practice quizzes he has taken. How many answers will he get incorrect after taking 2 practice quizzes?

15

13

10

5

anonymous · Answer

Can you substitute n for two in the given formula and solve?

anonymous · Answer

what?

anonymous · Answer

You have the formula 20 - 5n, where n is the number of tests taken. The number of tests taken are 2. So replace n in the formula with 2, and solve it. That it is say, change it from 5*n to 5*2.

anonymous · Answer

and 5 times 2 is 10 so the answer is 10?

anonymous · Answer

Yes! 20 - 5n = 20 - 5*2 = 20 - 10 = 10.

anonymous · Answer

tnx so much

anonymous · Answer

No worries.