Iwill mark brainliest on this one too

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

Describe how making an ‘and’ compound sentence effects your solution set

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.