A student is attempting to write the statement below as an equation. Which of the following statements best applies to the sample mathematical work? Statement: the product of a number and 2 is equal to the difference between that number and 4 Work: (1) Let x be the unknown quantity. (2) The phrase “the product of a number and 2” results in 2x. (3) The phrase “the difference between that number and 4” results in x – 4. (4) Set the values from step 2 and step 3 equal. A. The interpretation in step 2 is incorrect or invalid. B. The interpretation in step 3 is incorrect or invalid. C. The interpretation in step 4 is incorrect or invalid. D. The interpretation is correct as shown.

687.09 dollars       happy now

step-by-step explanation: 6870

1857 times .63 equals 1169.91 subtract that from 1857 you get 687.09

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.  

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)

you need to add a picture