6
Answer: CSet 1: Linear Functions (Advanced)
Explanation
PROBLEM
A phone plan is C(m) = 30 + 0.05m for m minutes. Cost for 200 minutes?
A phone plan is C(m) = 30 + 0.05m for m minutes. Cost for 200 minutes?
A.
35
B.
45
C.✓ Correct
40
D.
60
Detailed Explanation
Choice C is the best answer. C(200) = 30 + 10 = 40
Why others are wrong:
A: 35 is incorrect because it does not satisfy the equation.
B: 45 is incorrect because it does not satisfy the equation.
D: 60 is incorrect because it does not satisfy the equation.