Answer:
a= 16
b= -8
c= 6
d= -16
e= -4
Step-by-step explanation:
You need to include an image so I can help
She will need a minimum of 38 hours, at 38 hours she will make 456, plus the 300 she already has, so that in total is 756.
2×5^{2} if you don't understand its 2 times 5 to the second power.