What is the integer of 160 feet above sea level

What are “like terms”? why can we only add like terms?

The table represents a linear function. what is the slope of the function? –6 –4 4 6

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?