A computer can perform 4.5×〖10〗^2 instructions in a second. Which expression shows how long it would take to perform 1.8×〖10〗^10 instructions?
8.1×〖10〗^12 seconds
The answer is 27 because 10+17=27
The answer is 14 because a negative number multiplied by another negative number is positive. So (-7)*(-2) is 14.
