Write the number in scientific notation.0.00009958
A. 9.958 × 10-5
B. 9.958 × 10-4
C. 9.958 × 105
D. 9.958 × 104
Answer: A
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Solve the problem.Refer to the figure, where f(t) is the interest rate (as a percent) on a 6-month certificate of deposit t years after January 1, 1985. The straight lines are tangent to the graph of src="https://sciemce.com/media/4/ppg__dsd0601191643__f1q122g5.jpg" alt="" style="vertical-align: 0.0px;" height="339" width="384" />
A. ? -2%/year
B. ? 1%/year
C. ? 2%/year
D. ? 0%/year
at 
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How fast was the interest rate changing on January 1, 1995?
Find the centroid of the region.
A. 
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Solve the problem.A child's coin bank contains $2.22 in pennies and nickels. If the number of pennies is 50 less than 3 times the number of nickels, how many pennies are in the bank?
A. 3 pennies B. 42 pennies C. 34 pennies D. 52 pennies
Use the geometric interpretation of slope (rise divided by run) to find the slope of the line. Then, by identifying the y-intercept from the graph, write the slope-intercept form of the equation of the line.
A. y = - x - 3 B. y = - x + 3 C. y = x - 3 D. y = x + 3