The credit remaining on a phone card is a linear function of the total calling time made with the card. the remaining credit after 20 minutes of calls is $17.00, and the remaining credit after 33 minutes of calls is $15.05 what is the remaining credit after 39 minutes of calls

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

The following division is being performed using multiplication by the reciprocal find the missing numbers is 5/12 divided by x/3 equals 5/12 times x/10 equals 1/x

Fast! find the length of cu. the triangles are similar. show your work.