Plz Answer This Mathematics Question??? NEED HELP ASAP

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

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?

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.