In 1960, the world record for the men's mile was 3.91 minutes. In 1980, the record time was 3.81 minutes. a. Write a linear model that represents the world record (in minutes) for the men's mile as a function of the number of years, $t$ , since 1960.

What is the inverse of the function f(x)=4x+8

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36