2x+12 linear equations

Afruit stand has to decide what to charge for their produce. they need $10 for 4 apples and 4 oranges. they also need $15 for 6 apples and 6 oranges. we put this information into a system of linear equations. can we find a unique price for an apple and an orange?

Which expression is rational? 6. , square root two, square root 14, square root 49

Find the value of x in the diagram below. select the best answer from the choices provided