Attachment mathswatch plz need help asap

Daniel bought a computer game for $25 and later sold it to thomas for a 40% profit. how much did daniel sell the computer game for?

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined

Use the four functions below for this question. compare and contrast these four functions using complete sentences focus on the slope and y- intercept first, and then on any additional properties of each function