Answer:
Step-by-step explanation:
=\left(21\left(-3\right)-\left(-3\right)\cdot \:9\right)+\left(21\cdot \:9+\left(-3\right)\left(-3\right)\right)i
Since he has to give 50, and 12.25*p is the amount of money he has to spend (since it's 12.25 per pizza), we have 50-12.25=change
60mph-10mph=T would be the answer... I believe.
The answer & explanation for this question is given in the attachment below.