Use the dimensions in the illustration to find w, the width of the river, ifa = 18, b = 4, and c = 6
A.
27
B.
45
C.
D.
E.
none of these
Answer: A
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Translate to a variable expression. Use n for the variable unless otherwise stated.k added to two
A. k + 2 B. k ÷ 2 C. k - 2 D. 2k
Solve the problem.
Abbey is driving a delivery truck on a straight road. The graph shows the distance y in kilometers that Abbey is from Store A after x hours. (i) Is Abbey traveling toward or away from Store A? (ii) Find the slope of the line.
A. Away; slope is 20. B. Away; slope is 80. C. Toward; slope is -20. D. Toward; slope is -40.
Solve the problem.In the formula A(t) = A0ekt, A is the amount of radioactive material remaining from an initial amount A0 at a given time t, and k is a negative constant determined by the nature of the material. A certain radioactive isotope decays at a rate of 0.3% annually. Determine the half-life of this isotope, to the nearest year.
A. 100 yr B. 167 yr C. 2 yr D. 231 yr
Find the indefinite integral.
?
?
A. 
B. ?
C. ?
D. ?
E. ?