TUESDAY, SEPTEMBER 6
PLEASE DO THE WARM­UP ON A SEPARATE SHEET OF PAPER. YOU NEVER KNOW WHEN YOU WILL BE ASKED TO HAND IT IN!!
WRITE AN EXPRESSION FOR THE FOLLOWING:
1) EIGHT LESS THAN TWICE A NUMBER
2) SIX TIMES THE SUM OF A NUMBER AND THREE
1
CORRECT HOMEWORK:
PRACTICE 1.1A, # 1 ­ 6, 11­16
2
3
4
MODELING RELATIONS WITH EQUATIONS AND FORMULAS
YOU CAN USE ALGEBRAIC EXPRESSIONS TO WRITE AN EQUATION. AN EQUATION IS A MATHEMATICAL SENTENCE THAT USES AN EQUAL SIGN. IF THE EQUATION IS TRUE THEN THE TWO EXPRESSIONS ON EITHER SIDE OF THE EQUAL SIGN REPRESENT THE SAME VALUE. THE WORD "IS" OFTEN SUGGESTS AN EQUAL SIGN IN THE ASSOCIATED EQUATION.
5
TRACK ONE MEDIA SELLS ALL CDs FOR $12 EACH. WRITE AN EQUATION FOR THE TOTAL COST OF A GIVEN NUMBER OF CDs.
THE TOTAL COST IS 12 TIMES THE # OF CDs BOUGHT.
1) DEFINE A VARIABLE:
2) WRITE THE EQUATION
6
WRITE AN EQUATION TO SHOW THE TOTAL INCOME FROM SELLING TICKETS TO A SCHOOL PLAY FOR $5 EACH.
7
THE TOTAL COST IS THE NUMBER OF CANS TIMES $.70.
8
THE PERIMETER OF A SQUARE IS FOUR TIMES THE LENGTH OF A SIDE.
9
THE TOTAL LENGTH OF ROPE, IN FEET, USED TO PUT UP TENTS IS 60 TIMES THE NUMBER OF TENTS.
10
WHAT IS THE NUMBER OF SLICES OF PIZZA LEFT FROM AN 8­SLICE PIZZA AFTER YOU HAVE EATEN SOME SLICES?
11
12
PRACTICE 1­1
# 17 ­ 22
13