1.What number is 35% of 135? 2.What percent of 65 is 13? 3.$4 is what percent of $50? 4.14% of 81 is what number? 5.Find the scale factor of a model container.

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Presentation transcript:

1.What number is 35% of 135? 2.What percent of 65 is 13? 3.$4 is what percent of $50? 4.14% of 81 is what number? 5.Find the scale factor of a model container if the scale is 1 inch = 7 feet. 6.If a car travels 270 miles in 3 hours, what is its rate? Project due next Monday, 2/13 Test next Wednesday, 2/15 – Journal Check also.

EXIT RAMP Does this relationship represent a constant rate of change? EXIT ONLY EXIT 12E

1.The Jones spent $32.50 each month for a gym membership. This is 75% of the original price. What was the original price? 2.What is length of the model? Scale factor = ____ 3. Define: slope, slope-intercept form, y-intercept (see pg 410) 4. If the change of x = 2, and the change of y = 4, what is the slope?

EXIT RAMP What is the slope if the change of Y = 27, and the change of X = 3? EXIT ONLY EXIT 12E

1.Find the percent of change if the original number is 75 and the new number is Five out of every seven households have cable TV. If 38,500 households have a TV, how many do not have cable TV? 3.Label each variable: y = mx + b 4.Define: direct proportion, direct variation (Need formulas from pg 406) 5.Which equation is proportional? Why? y = 5x or y = 5x + 1

EXIT RAMP Is this a direct variation? EXIT ONLY EXIT 12E Days(x)2468 Hours Worked (y)

1.What is the sales price of a pair of $45 skates with a 20% discount? 2.Scale factor is 1 inch = 50 inches. Actual length of table is______ 3.Define: inverse proportion, inverse variation (Get formula from p. 412) 4.Is this proportional?

EXIT RAMP Is this an inverse variation?. EXIT ONLY EXIT 12E