Try 40x+20+4kxexponet2+4kx+k
Answer:
4^8
Step-by-step explanation:
If you are multiplying two bases that are the same with different exponents, the exponents get added and the base stays the same:

Therefore, 4^3 * 4^5 = 4^8
Well, there are 4 of 1/4 in each whole number. there is two whole numbers, so that makes 8 of 1/4's. Now we add the two in the fraction and we come out with 10. 1/4 can go into 2 2/4 10 times.