I have a 99.17% in Math class. I did a test and got 50%. How much will I have as a score in class now?

An appliance store sells a washer-dryer combination for $1800. if the washer costs $300 more than the dryer, find the cost for each appliance.

For the equations below which statement is true ?

The graph of f(x) = |x| is transformed to g(x) = |x + 11| - 7. on which interval is the function decreasing?