Answer:
D
Step-by-step explanation:
complementary means it equals 90
6)x-7+10 7)3+x+1 8)8x-16 9)x/2-9
1,000/40= 25 calculators
1,000/40.30=24.8
she can only buy 24 calculators all together
3.2x1000=3200
And that's your answer: 3200
Hope this helps :)