Which is the best estimate for (6.3 x 10 to the power of -2)(9.9x 10 to the power of -3) written in scientific notation? A- 6x10 to the power of -4

B- 60x10 to the power of -5

C- 6x10 to the power of 7

D- 60x10 to the power of 6

Question 5 spring semester final exam math evaluate

Ahome improvement store rents it’s delivery truck for $19 for the first 75 minutes and $4.75 for each additional 1/4 hour. if a customer rented the truck at 11: 10 am and returned the truck at 1: 40 pm the same day, what would his rental cost be?

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?