math
posted by gary .
1. If x people working together make a total of y dollars after an hour of work. how much money will z people make if they work 4 hours at the same rate per person ?
2.Each of the n members of an organization may invite up to 3 guests to a conference. What is the maximum number of members and guests who might attend the conference?
A. n + 3
B. 3n
C. 3n + 4
D. 4n
E. 4n + 4

1. Amt = (Y/X) * 4 * Z = 4YZ/X Dollars.
2. n + 3n = 4n.