If sin(x)=k, then what does tan(pi-x)=

What is the first step of an indirect proof of a number that is divisible by two

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?

Find two numbers if their sum is 91 and the ratio is 6: 7?