Could you solve Test 6, Section 4, number 18 for me? Thanks!

# Test 4 Section 4 Number 17

Test 4 Section 4 Number 17. Could you give me the explanation for this problem? Thank you!

# Test 5, Section 4, Questions 25 and 28. How do you get to the answers?

Test 5, Section 4, Questions 25 and 28. How do you get to the answers?

# Test 5, Section 4, Question 20. How do you get to the answer?

Test 5, Section 4, Question 20. How do you get to the answer?

# Practice test 5, Section 3, Prob 15: How would you think through this problem to get the right answer?

Practice test 5, Section 3, Prob 15: How would you think through this problem to get the right answer?