Solve.If a rock falls from a height of 100 meters above the ground, the height H (in meters) after x seconds can be approximated using the formula H = 100 - 4.9x2. What is the height of the rock after 3 seconds?
A. 85.3 m
B. -116.09 m
C. 855.9 m
D. 55.9 m
Answer: D
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Identify the largest number expressible in a simple grouping system with the specified base and specified number of distinct symbols.base seven, nine distinct symbols
A. 4,782,968 B. 40,353,606 C. 4,782,969 D. 40,353,607
What percent of people in the chart in number 7 have a blood pressure between 120 and 159?
A. 30% B. 0.3% C. 3.3% D. you cannot combine the frequencies to find out
Simplify. Express your answer with positive exponents. Assume that all variables are nonzero.(3x-8y9z-9)-3
A. 
B. 
C. 
D. 
Provide an appropriate response.Find all of the higher-order derivatives of x(t) = x4 - 3x2 - x. Use your graphing calculator to graph x(t) and x'(t) on the same axes. Verify that when x(t) is decreasing (sloping downward), the value of x'(t) is negative. Repeat this for x'(t) and x''(t), for x''(t) and x'''(t), and for x'''(t) and x(4)(t).
What will be an ideal response?