Community College of Baltimore County Equations with Scientific Notation Problems

Question Description

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1. Change to scientific notation 46900 0.034

2. Change to standard form 2.34 × 103 1.555 × 10?4

3. Change 70 miles per hour to inch per minute. Round to two decimal places.

4. Find the number of significant digits 560 40400 0.0023

5. Which number is more precise? 43.2 43.234

6. Which number is more accurate? 23.1 0.3451

7. ?(?) = 3? ? 4 ???? ?(?4)

8. Assume that the weight w in grams (g), of a tumor decreases linearly as a function of the amount of time t, in days, that the patient has been receiving chemotherapy. After ten days of treatment, the weight of an abdominal tumor is 46 grams. With fifteen additional days of chemotherapy, the tumor has been reduced to 32 grams.

a) Graph the function.

b) Find the slope of the line.

c) Write an equation for weight w in grams (g), of the tumor as a function of the amount of time t in days spent in chemotherapy.

d) How much chemotherapy is required to eliminate the tumor?

e) What was the original size of the tumor?

f) what does slope mean in the context of this problem?

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