What dose the order pair (4,250) represent?​

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =

Select the correct answer what is the 10th term of the geometric sequence 3,6, 12, 24,48 a. 512 b. 3,072 c. 768 d. 1,536