Do Now 10/26Define a variable, write an inequality and solve:

1. You plan to buy a bicycle that will cost at least $180. You have saved $38 and your parents have given you $50. How much do you still need to save?

2. Your local garden shop has plants on sale for $1.50 each. You are planning a vegetable garden. You have at most $20 to

spend on tomato plants. What is the greatest number of plants you can buy?

AgendaOct. 26

Do Now

Homework Check

Ch. 3.4 - Solving multi-step inequalities

Homework 25 p. 156 # 16 - 52 multiples of four

First Quarter Final Assessment on Friday.

The school band needs a banner to carry in a parade. The banner committee decides that the length of the banner should be 18 feet. What are the possible widths of the banner if they can use no more than 48 feet of trim? Draw a diagram to help understand the problem.

HW CHECK

Solve an inequality the same way as an equation, except when multiplying or dividing each side by a negative, switch the direction of the inequality sign.

REMEMBER:

Solve these inequalities:

b < -6 x ≥ -16 3

s < 6-8 > p or p < -8

STEPS for solving inequalities:

1. Distribute

2. Combine like terms on each side.

3. Use +, - to get variables and #s on opposite sides.

4. Use multiplication and division to isolate the variable.

5. Switch the direction of the sign if necessary!

ex. 1

ex. 2

ex. 3

ex. 4

Please try p. 156 # 15, 23, 25, 35, 43

The answers are in the back of the book.