What is the expressions of 2/5and5/2?

Ivan and jeff buy a package of 8 pens for $4.00. ivan wants 5 of the pens, and jeff wants 3.how much should each student pay?

How many solutions does the nonlinear system of equations graphed below have?

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if