Answer:
1 2 and 3
Step-by-step explanation:
in pounds 21,000
in tons 10.5
10.98
(28.55-6.59)/2
=21.96/2
=10.98
(7x²+6)-(2x-5)
=7x²+6-2x+5
=7x²-2x+11
optionD
i think it's D i have the same test today