Can anyone me make sense out of this? tap picture to see whole question

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?

Find the roots of the equation below. x^2 - 6 + 9 = 0

How to write four times a number,minus 6,is equal to theee times the number+8 as an equqtion