After 4 new students joined a class, the class has 30 students. Which equation can be used to find n, the number of students in the class before the new students joined?

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?

Type the correct answer in each box. spell all the words correctly, and use numerals instead of words for numbers. if necessary, use / for the fraction bar(s).

Explain how to graph a scatterplot and its regression line using a regression calculator.