Please help me with this I'm being timed out​

Super ultra mega important if you can answer this correctly i will give you 100 points but if you don't answer it correctly you'll get a big report. so stay aware and have a nice day!

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]