Two mechanics worked on a car. the first mechanic worked for 10 hours, and the second mechanic worked for 15 hours. together they charged a total of $ 2650 . what was the rate charged per hour by each mechanic if the sum of the two rates was $ 205 per hour?

(note i put the graph in so plz )the graph shows the amount of water that remains in a barrel after it begins to leak. the variable x represents the number of days that have passed since the barrel was filled, and y represents the number of gallons of water that remain in the barrel. what is the slope of the line

Which of the following are accepted without proof in a logical system? check all that apply.

The functions below show the amount of money bella and sweet t had saved after earning money for doing chores. which description best compares the two functions?