A student in a Pre-Calculus class has test scores of 79, 62, 74, and 72. The final exam is worth 4 test grades.
Write a linear equation that models this problem, where x is the grade on the final exam and y is the
student's grade in the course.
What grade is needed on the final to earn a B (average score of 80%)?

12x + 1 = 25 solve the following equation. then place the correct number in the box provided.

What are the soultion(s) to the quadratic equation 40- x^2=0

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.