The second answer with the equilateral triangle
When you multiply you add the exponents, so 7^9*7^-3=7^6
13.542 = 35.42*0.1 +10
13.542 is 10 more than 10% of 35.42
781 = 78.1 * 10
781 is equal to 10 times 78.1
1.2 has two significant figure but 01.20 has 3 significant figure
