Shanika and vanesa are comparing their electric bills for the past month. shanika is on a standard use plan and vanesa is on an interval use plan. each person’s usage is listed on the chart below:

C)  Shanika pays $35.88 more than Vanessa.

Explanation:

This is because when doing the math, which is very simple, you can notice that, even though Shanika and Vanessa are using almost the same amount of energy during the 30 day period, the plan that Vanessa is using gives her an advantage regarding the on-peak and off-peak hours, which ultimately makes Shanika pay more than Vanessa.

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."