Let ∠1, ∠2, ∠3, and ∠4 have the following relationships. ∠1 and ∠2 are vertical angles.

∠3 and ∠4 are right vertical angles.

∠3 is adjacent to both ∠1 and ∠2.

What is the sum of the measure of ∠4 and the measure of ∠1 minus the measure of ∠2?

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.