Someone Please help quickly

1. are the triangles similar and if so why? what is the value of x? show your work.

Write 17/20 as a decimal and as a percent.

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?