How many solutions does the following system have x+y=3, 2x+2y-5

Charles is on a 8 1/2 mile bike ride. he stops for a rest after he’s gone 5 2/5 miles. how much farther does he still have to go?

Here is another math questions. i will keep asking different questions. 4^2x=6

Describe how to determine the average rate of change between x = 4 and x = 6 for the function f(x) = 2x^3 + 4. include the average rate of change in your answer.