Solve for x. round to the nearest tenth

x =23.9 (which matches the last option in the list of possible answers)

Step-by-step explanation:

Notice that we can use ratios among sides of similar triangles to solve this problem. Notice the two triangles in question. The small triangle is that with sides (x-1) and 20, while the larger triangle is that of larger sides built by the addition of (x-1) + 8 , and by 20 + 7

So we can relate similar sides with their ratios, and say that side (x-1)+8 is to side (x-1) the same as side (20 +7) is to side 20. Such put in math terms becomes the following proportion:

we can now solve for the unknown "x" in the rational equation above, by cross multiplication:

which we can round to 23.9 to match the last option in the list of possible answers.

step-by-step explanation:

through just a quick inspection, one can see that the graph of this cubing function starts in quadrant iii and ends in quadrant i.   when x = 0, y = 3, so the y-intercept is (0, 3).

if graphs are part of the problem statement, share them.   .

why can't you?

step-by-step explanation: