in step 3, ben made an error adding positive and negative numbers.
in step 4, ben did not divide correctly
in step 1, ben did not distribute the 2 correctly
in step 2, ben did not maintain the equality of the equation

It says factor each expression 49x-28?

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.

What is the circumference of a circle with an area of 50.24 cm²?