How many middle school boys are interested in playing basketball? what type of survey would i use?

Can someone me with the property questions for 12 13 and 14 plz

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below.

Emily is entering a bicycle race for charity. her mother pledges $0.90 for every 0.75 mile she bikes. if emily bikes 18 miles, how much will her mother donate?