Answer:
I believe that the answer is 153 units^2.
9*10=90
And then 9*7=63, since there are two of the same triangle, we don't have to divide by 2.
So, 90+63=153.
I hope this helps!
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you only can only buy six pencils and six erasers
No because since multiplying by 10³ is multiplying by 10 times 10 times 10 which equals 1000 and multiplying by 10 factors of 3 is multiplying by 3 times 3 times 3 times 3…….for 10 times equals 59049
6 hope i could help good luck