Using exactly four 4's and any operations[+,/ write an expression to equal each of the following:
3
4
5

Aquadratic function f(x) has a turning point at (3,-7). what is the turning point of -f(x)?

The table shows the balance of a money market account over time. write a function that represents the balance y(in dollars) after t years.

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?