Help on math thanks its due today so i need it!!

Acabinmaker buys 3.5 liters of oat varnish the varnish cost $4.95 per liter what is the total cost of 3.5 liters

Jason went to an arcade to play video games. he paid $2 for every 11 tokens he bought. he spent a total of $16 on tokens. which equation can be used to determine,t, the number lf tokens jason bought

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319