Factorise fully 21a - 7a2

Which fraction below is equivalent to 10/12?

What is coefficient of the term of degree of degree 5 in the polynomial below

At a local museum, the total price for one adult and one child is $11. mrs. smith paid for herself and her three children. she spent $19. record the system of equations to be solved and then find the price of an adult and child ticket using either elimination or substitution.