Which part of the algebraic expression 3 + 7d is the coefficient? 1. 3 2. 7 3. 7d 4. 3 + 7d

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.