If k is a positive integer, find the radius of convergence, R, of the series [infinity]∑n=0 (n!)^k + 3 . x^n/((k + 3)n)!.

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Tyler enjoys the fish so much that after his birthday his family decides to take him to a famous aquarium a tank at the aquarium is similar to his tank with the scale factor of 8 how many times greater is the volume of the tank at the aquarium than the volume of tyler tank

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?