John saved 65 coins. He saved nickels and dimes only. If he had totally $4.90, how many nickels did he have?

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Eliza wants to make $10,000 from her investments. she finds an investment account that earns 4.5% interest. she decides to deposit $2,500 into an account. how much money will be in her account after 14 years?

Solve this system of equations: y=x2-3x + 12 y=-2x+14 4. substitute the values of x, -1 and 2, into either origina equation to solve for the values of y. what are the solutions of the system of equations?