Wapi simplified an expression. His work is shown below. 7 (8.5 minus 1.5) + 8 divided by 2 Step 1 7 (7) + 8 divided by 2 Step 2 49 + 8 divided by 2 Step 3 57 divided by 2 Step 4 28.5 In which step did Wapi make his first mistake? step 1 step 2 step 3 step 4

2x minus y equals 6, x plus y equals negative 3

The points (1, 7) and (0, 2) fall on a particular line. what is its equation in slope-intercept form?

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?