Some pl help i'm struggling 20 points for desent answer pl ty!
The cost of ticket t to go to a concert with 3% sales tax can be represented by the expression t added by 0.03.Simplify the expression. Then determine the total cost after the sales tax if the original price is $72.

What is the number 321,000,000 in scientific notation? also what is the number? ?

Aflower has 26 chromosomes. to create a new flower, how many would a sperm cell have what is called?

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?