Wednesday, August 21 st Please complete the warm up 1.5mm=__________km 2. How many pints are in 7.5 quarts?

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Presentation transcript:

Wednesday, August 21 st Please complete the warm up 1.5mm=__________km 2. How many pints are in 7.5 quarts?

I. R EVIEW I NEQULITIES

1. Silvia is saving to buy a laptop that costs $1,100. So far she has saved $400. She makes $12 an hour babysitting. What’s the least number of hours she needs to work in order to reach her goal? 1,100≤ x

2. Joe can spend at most $50 on a pair of pants. He also has a $10 coupon. Write an inequality that represents how much Joe can spend. 50 ≥ j – 10

W HAT DID B RAD P ITT DO WRONG ? How many cups are in 5 pints?

C OMPARE AND C ONTRAST

T IME C ONVERSIONS

E XAMPLE 1 1. Bob studied for 2.5 hrs. How many minutes did he study for? Initial unit = hr.Final unit = _______

H OW MANY MINUTES ARE IN 2.5 HOURS ? Initial unit 2.5 hr Conversion Final factor unit 2.5 hr x 60 min = 150 min 1 hr cancel Answer (2 SF)

E XAMPLE 2 How many seconds are in 1.4 days? Unit plan: days hr min seconds 1.4 days x 24 hr x ?? 1 day LecturePLUS Timberlake 12

S OLUTION Unit plan: days hr min seconds 1.4 day x 24 hr x 60 min x 60 sec 1 day 1 hr 1 min = 120,960 sec

E XAMPLE 3 John Isner serves 140 miles per hour. How fast is that feet per second?

S OLUTION 140 miles x 5,280 ft. x 1 hr x 1 min = 1 hr 1 mile 60 min 60 sec. = ft/sec.

E XAMPLE 4 If a 3 day boating trip covers 150 miles and you are boating 5 hours a day, how many miles must you boat each hour? 10 miles per hour