The rate, r, at which you drive a car is related to the distance, d, and time, t, in the equation
d
r =
If you increase the distance and keep your rate constant (stays the same), what
happens to your time?

A. Your time will decrease
B. Not enough information to tell
C. Your time will increase
D. Your time will stay the same

How do you use the elimination method for this question? explain, because i really want to understand!

How do i multiply two digit numbers

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?