Write the Equation in standard form The line which passes through (1,-4) and (-1, 6)

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

Okay so i didn't get this problem petro bought 8 tickets to a basketball game he paid a total of $200 write an equation to determine whether each ticket cost $26 or $28 so i didn't get this question so yeahyou have a good day.

Evaluate the expression. (9 + 5)(3 + 2)0