9th grade algebra 1

Question

1. 2a + 3 = 1/2(6 + 4a)

2. Pristine printing will print business cards for $.10 each plus a setup charge of 15$. the printing offers business cards for $.15 each with a setup charge of $10. what number of business cards cost the same from either printer?

3. 2y + 4 = 2 (y + 2)

Answer 1

1)

2a + 3 = 1/2(6 + 4a)

2a + 3 = 3 + 2a

infinite number of solutions

 

2)

15 + 0.1x = 10 + 0.15x

5 = 0.05x

5/0.05 = x = 100 cards

 

3)

2y + 4 = 2(y + 2)

2y + 4 = 2y + 4

infinite number of solutions

Answer 2

H3H3H3H3H3H3H3H3H3H3H3H3

Answer 3

solve the equation.x+9=5

Answer 4

graph each point j(4,5) k(-3,2) l(6,0) m(1,-7)