Solve the system:

15x + 13y = 28

7x - 5y = 2

Question 7 options:

(15, 13)

(28, 2)

(2, 1)

(1, 1)

If the first step in solving the system

15x + 13y = 28

7x - 5y = 2

Is multiplying first equation by 5 and second equation by 13 we are solving by:

Question 8 options:

graphing

elimination

substitution

none of the above

The nurse needs to mix 2% solution with 10% solution to get 10 ml of the prescribed 6% solution. What amount of each solution does she need to use?

Question 9 options:

3 - 2%, 7 - 10%

7 - 2%, 3 - 10%

4 - 2%, 6 - 10%

5 - 2%, 5 - 10%

Solve the following system by substitution:

5x - 4y = -1

2x + y = 10

Question 10 options:

(0, 7)

(3.5, 0)

(3, 4)

(0, 0.25)