Question

Barbara's current monthly cell phone bill can be represented by (*) - 0.204 + 15 where x is the number of minutes shoes each month. She searched for a better deal and found one represented by /(a) - 0.102 + 12.How did her plan change?

A) The cost per minute increased, and the fixed charge decreased.
B) The cost per minute decreased, and the fixed charge increased.
C) The cost per minute and the fixed charge both decreased.
D) The cost per minute and the fixed charge both increased.

Answer 1

Barbara's cell phone plan costs have changed; both the cost per minute and the fixed monthly charge have decreased in her new plan. option C the correct answer.

Step-by-step explanation:

Barbara's current monthly cell phone bill is based on the formula (*) - 0.204 + 15, where x represents the number of minutes used each month. The new plan she found is represented by the formula /(a) - 0.102 + 12. To determine how her plan changed, we compare the two formulas. In the original plan, she paid $0.204 per minute, plus a fixed charge of $15 per month. With the new plan, the cost per minute is $0.102 and the fixed charge is $12 per month.

Comparing the two, we can see that the cost per minute has decreased from $0.204 to $0.102. Likewise, the fixed monthly charge has also decreased from $15 to $12. Therefore, the alteration in her cell phone plan is such that both the cost per minute and the fixed charge have decreased,