Sam is measuring the velocity of a car at different times. after two hours, the velocity of the car was 50km/h. after six hours, the velocity of the car is 54km/h.

part a: write an equation in two variables in standard form that can be used to describe the velocity of the car at different times. show your work and define the variables used. (5points)

part b: how can you graph the obtained in part a for the first seven hours? (5points)

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation: