To approach a runway a plane must begin a 7 degree descent starting from a height of 2 miles above the ground. To the nearest mile, how many miles from the runway is the airplane at the start of the approach?

Each month, a phone company charges $20 for 500 minutes of talk time plus $0.45 for each additional minute. unlimited texting costs $30 more. choose an expression to show the cost of a talk-and-texting plan for one month, given x minutes over 500.