The circumference of the earth is approximately 25,000 miles. what is this number expressed in scientific notation? a) 2.5 x 10^4 b) 2.5 x 10^3 c) 25 x 10^3 d) 2.5 x 10^4

Abus ride for a senior citizen cost $1.25. a monthly pass costs $35. write and inequality that represents the number of times a senior citizen must ride the bus for the monthly pass to be a better deal.

With alll of except for the 2 that i did already

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.