The moon is a sphere with radius of 567 km. determine an equation for the ellipse if the distance of the satellite from the surface of the moon varies from 900 km to 169 km.

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.