Someone plz answer these 3 different questions 1.The sales tax on a new Fridge that costs $1800 was $166.50 What is the Sales tax in Percent?

2.The Alvarez's lived in a hours that had area of 1575 square foot. Now they moved to a bigger house that has area of 2100 square foot. What it the percent increase in square foot?

3.The Alvarez's lived in a hours that had area of 1575 square foot. Now they moved to a bigger house that has area of 2100 square foot. What it the percent increase in square foot?

True or false look at the picture pls : /

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

Find the y-intercept and x-intercept for the equation 5x-3y=60 what is the y-intercept