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WARM UP

Penny is 39 years old. She has lived in Texas for 16 years. How old will Penny be when she has lived in Texas for half her life?

WORK WITH A PARTNER…

A high school basketball court is 84 ft long by 50 ft wide. A college basketball court is 10 ft longer than a high school basketball court.

1) Evaluate a. 50(84 + 10) b. 50(84) + 50(10)

2) Explain how each of the expressions represents the area of a college basketball court.

DISTRIBUTIVE PROPERTY

For all real numbers a, b, and c;

a( b + c) = ab + ac (b + c)a = ba + ca

a( b – c) = ab – ac (b – c)a = ba – ca

SIMPLIFY

2(5x + 3) (3b – 2)

SIMPLIFY

-3(2x – 1) -(7 – 5b)

SHOPPING

A poster is on sale for $3 off the regular price. Suppose you bought two posters and paid a total of $8. Solve the equation 2(x – 3) = 8 to find the regular price of each poster.

SOLVE

3(x – 1) + x = 5

ELECTRICITY

Several 6- and 12-volt batteries are wired so that the sum of their voltages produces a power supply of 84 volts. The total number of batteries is 10. How many of each type of battery are used?

HOMEWORK

Pg 127-128 # 19, 22 – 36 even, 37, 40