To check a solution, you can the solutions into the equations and verify that both equations are true.

To check a solution, you can substitute the solutions into the equations and verify that both equations are true.

Step-by-step explanation:

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.

investment b is an ordinary annuity with $3,909.64 in the account after one year.

step-by-step explanation: