Is x-4 a factor of polynomial 2x^3+5x^2-37x-60

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?