Edward because they completed more days and miles !!
Answer: 8x⁴ - 12x³ - 176x² + 420x
Step-by-step explanation:
First multiply 4x by (x - 3) which = 4x² - 12x. Next multiply (4x² - 12x) by (x + 5) which = 4x³ + 8x² - 60x. Multilying our new trinomial with the next binomial: (4x³ + 8x² - 60x)(2x - 7) = 8x⁴ + 16x³ - 120x² - 28x³ - 56x² + 420x. Combining like terms: 8x⁴ - 12x³ - 176x² + 420x. Notice that when you reduce and factor, you will end up with the starting binomials meaning this solution is correct.
Set up a proportional fraction relating RSV and RTU. Before doing that, sort out what RT is equal to;

Now, we can equate SR/SV with RT/TU. This is something we can do because they are similar, and therefore should have equal ratios between sides.

Cross multiply them, and solve for x.

That being said, the little cutout at the top left claims the answer is 8. If you verify my answer, it works out.
Y = 8 · 3ˣ for x=4
y = 8 · 3⁴
y = 8 · 81
y = 648