X y = 75 the equation above relates the number of minutes, x, maria spends running each day and the number of minutes, y, she spends biking each day. In the equation, what does the number 75 represent?.

The chart below shows the distribution of weeds in yard

Ariel is working at a meat packing plant for 5 nights a week. her regular wage is $11 an hour. she earns tine and a half for any overtime hours. this week she worked 9 hours of over time .how much will ariel earn for overtime this week ?

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?