PLEASE HELP

1. 33.75%
2. 30%
3. 37.42%
4. 34.84%

Acertain standardized? test's math scores have a? bell-shaped distribution with a mean of 520 and a standard deviation of 105. complete parts? (a) through? (c)

Can someone check if i did this correct. it’s number 4 if you’re wondering.

Abus travels 36 miles in 45 minutes. enter the number of miles the bus travels in 60 minutes at this rate.