The total of 42, 75, 189, 301, and 728 is
a. 2,301.
b. 1,533.
c. 1,335.
d. 1,297.

Can someone me with this problem i don't understand i need

Logan wants to know how many skateboards have defective parts. he inspects 20,000 skateboards and keeps track of the number of defects per board. use his probability distribution table to find the expected value for defects on a skateboard.

Lucy and donavan measured the length of the school garden. lucys measurement is 11.3m and donavans measurement is 113 cm. could both be correct? explain