It cost $6 dollars to send 15 text messages. what was her cost of texting in texts per dollar? express your answer in simplest form.

Find an equation for the linear function which has slope -10 and x-intercept -7

During a bike challenge riders have to collect various colored ribbons each 1/2 mile they collect a red ribbon each eighth mile they collect a green ribbon and each quarter mile they collect a blue ribbion wich colors of ribion will be collected at the 3/4 markrer

What is the missing step in this proof ?