Can you help me on question five?!

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

Match each equation with the operation you can use to solve for the variable. subtract 10. divide by 10. divide by 5. subtract 18. multiply by 10. add 18. add 10. multiply by 5. 5 = 10p arrowright p + 10 = 18 arrowright p + 18 = 5 arrowright 5p = 10 arrowright

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)