Rebekah is planning to make a model of a pyramid for a geography project. The length of each edge of the base
is 11 in, and the height of each triangular face is 8,4 in.
About how much cardboard will Rebekah need to make
the triangular sides of the pyramida

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.