Write an equation in point-slope form for a line that passes through the point with the given slope. (5,3), m=7

1/3(x-10)=-4 solve for x with steps

Ineed to know the answer to this algebra question.

Acompany charges $0.10 for each letter engraved. bobby plans to spend no more than $5.00 on the engraving on a jewelry box. write and solve an inequality to find the maximum number of letters he can have engraved.