What is 5y=6x-4i can't find the answer i need

What is the solution set of the quadratic inequality x^2-5< or equal to 0

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

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?