(a) what is wrong with the following equation?

x2 + x − 42/ x − 6 = x + 7

1)(x − 6)(x + 7) ≠ x2 + x − 42
2)the left-hand side is not defined for x = 0, but the right-hand side is.
3)the left-hand side is not defined for x = 6, but the right-hand side is.
4)none of these — the equation is correct.

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks

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?