The sum of three numbers is 73. the second number is equal to the first number diminished by 7. the third number is five times the first. what are the numbers? which three expressions could be used to represent the number?
a. n; n-7; 5n
b. n+7; n-7; n
c. n+5; n-7; n

Sketch the vector field vector f( vector r ) = 8vector r in the xy-plane. select all that apply. the length of each vector is 8. the lengths of the vectors decrease as you move away from the origin. all the vectors point away from the origin. all the vectors point in the same direction. all the vectors point towards the origin. the lengths of the vectors increase as you move away from the origin.