PLS HELP WILL GIVE BRAINLIEST Jonathan decides that he is going to start eating healthier and stop drinking soda. His first week of doing so he loses 3.4 lbs. The second week he did not do as well and gained 1.2 pounds. The third week he loses another 2.9 lbs. How much weight did Jonathan lose in all?

Agroup of students want to create a garden. they do not know the exact measurements but they propose using a variable to represent the length and width of the garden. the length of the garden is 10 feet longer than double the width. use a single variable to write algebraic expressions for both the length and width of the garden. write an algebraic expression for the area of the garden. use mathematical terms to describe this expression.

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

Abby is collecting rainfall data. she finds that one value of the data set is a high-value outlier. which statement must be true? abby will use a different formula for calculating the standard deviation. the outlier will increase the standard deviation of the data set. the spread of the graph of the data will not change. abby will not use the mean when calculating the standard deviation.