Unit 3 Study

Bob has $150 in his savings account and saves $40 per month.

• y=150 + 40

• y=40x + 150

• y=150x + 40

 In order to join an online learning community, there is a $20 startup fee and a $5 monthly fee. Write an equation in slope-intercept form that models this situation.

• y = 20x + 5
• y = 5x +20

Bob has $150 in his savings account and saves $40 per month.  Which equation represents the amount Bob has in his account after x months?

• y = 150 + 40
• y = 40x + 150
• y = 150x + 40

Solve: 5x - 14 = 8x + 4

• 6
• -6
• -18/13
• 10/3

I can solve Inequalities.
4(5x + 2) ≤ 28

• x ≤ 1
• x ≥ 1
• x ≤ 8
• x ≥ 8

Solve:
3(y+5)≥21

• y≤2
• y≥2
• y≥12
• y≤12

6. Pet Supplies makes a profit of $5.50 per bag on its line of natural dog food. If the store wants to make a profit of no less than $5225, how many bags of dog food does it need to sell? 

• x/5.50 ≥ 5225
• 5.50x ≥ 5225
• x + 5.50 ≤ 5225 
• x - 5.50 ≤ 5225