True or false; triangles congruent or not?

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

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?