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%)?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Axel follows these steps to divide 40 by 9: start with 40. 1. divide by 9 and write down the remainder. 2. write a zero after the remainder. 3. repeat steps 1 and 2 until you have a remainder of zero. examine his work, and then complete the statements below.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.