The answer is A, polynomials should be separated by + and -. A is just a monomial.
Answer:
2.8 if rounded, If not rounded, 2.77
D)90
Step-by-step explanation:
First you work out 3^4 which is 81.
Then add 9 to it and it becomes 90.
80 miligrams
100 / 250 = 0.4
0.4 * 200 = 80
