In the sketch below, line m{“version”:”1.1″,”math”:”m”} and…

In the sketch below, line m{“version”:”1.1″,”math”:”m”} and line n{“version”:”1.1″,”math”:”n”} intersect to form pairs of vertical angles.  The measure of ∠4{“version”:”1.1″,”math”:”∠4″} is 81°{“version”:”1.1″,”math”:”81°”}.  Find the measures of ∠1{“version”:”1.1″,”math”:”∠1″}, ∠2{“version”:”1.1″,”math”:”∠2″}, and ∠3{“version”:”1.1″,”math”:”∠3″}.  

Sandy earned the following test scores (out of 100{“version”…

Sandy earned the following test scores (out of 100{“version”:”1.1″,”math”:”100″} points) on the first four tests in her business class: 87{“version”:”1.1″,”math”:”87″}, 99{“version”:”1.1″,”math”:”99″}, 94{“version”:”1.1″,”math”:”94″}, and 92{“version”:”1.1″,”math”:”92″}.  Here mean test score is 93{“version”:”1.1″,”math”:”93″}.  What score would Sandy need to earn on the fifth test in order to raise her mean test score to 94{“version”:”1.1″,”math”:”94″}?