ALGEBRA 1 HELP what is is the GCF of 12x^3y^5 and 2x^2y^7 and what is the LCM of 6x^2y^3 and 10x^3y

Which of the following statement about pascal's triangle are true?

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

The number of 8th graders who responded to a poll of 6th grade and 8 th graders was one fourtg of the number of 6th graders whi responded if a total of 100 students responddd to the poll how many of the students responded were 6 th graders