All digits are odd, it is a multiple of 5, the sum of the hundreds digit and the tens digit is 10 and less than 200. what is the secret number

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

Write the expression as a single natural logarithm. 2 in a - 4 in y