A submersible is a type of underwater vessel. Suppose a submersible starts at a depth of 40 feet below sea level, represented by - 40 feet. The table shows the submersible change in depth from one minute to the next.

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?