the resendez family pays a monthy base charge for their electricity plus a charge for each kilowatt-hour used. In april, their electric bill was $144.50 for 750 kwh and in May, it was $122.0 for 600kWh. What is the charge per killowatt-hour?

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.

For a science project, a high school research team conducted a survey of local air temperatures. based on the results of the survey, the found that the average temperatures were around 10 degrees higher than expected. this result was wrong. the trouble with the survey was that most of the locations were exposed to direct sunlight and located over asphalt or sand, which resulted in higher temperatures than normal. this is a classic example of an error in which phase of inferential statistics?

3/4 + p = 1/2? i’m not sure how to solve it