If I give my brother $5$ dollars, then we will have the same amount of money. If instead he gives me $14$ dollars, then I'll have twice as much money as he will have. How much money does my brother currently have (in dollars)?

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?

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.