Math question Pls help

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

The graph shows the amount of money noah earned based on the number of lawns he cut. which list shows the dependent quantities in the graph?