Solve the problem.An experimental model for a suspension bridge is built. In one section, cable runs from the top of one tower down to the roadway, just touching it there, and up again to the top of a second tower. The towers are both 16 inches tall and stand 80 inches apart. At some point along the road from the lowest point of the cable, the cable is 1.44 inches above the roadway. Find the distance between that point and the base of the nearest tower.
A. 28 in.
B. 12.2 in.
C. 28.2 in.
D. 11.8 in.
Answer: A
Mathematics
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Fill in the digits for the given place values in the following whole number.8,352,642,148billions: millions:
A. Billions: 2, millions: 5 B. Billions: 3, millions: 2 C. Billions: 8, millions: 2 D. Billions: 2, millions: 6
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Simplify the expression. Assume that all variables are positive when they appear.
? 
A. -20x B. 20x C. -1x D. 9x
Mathematics
Solve the problem.The size P of a certain insect population at time t (in days) obeys the function 
After how many days will the population reach 1500?
Fill in the blank(s) with the appropriate word(s).
Mathematics
Find the function value.Find f(7) when f(x) = x3.
A. 21 B. 216 C. 2187 D. 343
Mathematics