if 3 gal of premium unleaded gasoline costs $10.38, how much would it cost to completely fill a tank whose capacity is 9-gal?

Easy points boii. read it. ya. fresh

Anyone know? will mark brainliest if you're correct!

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%