Estimate this product by rounding each number to one nonzero digit before multiplying: (2876)(513)(18) asap

Which of the following pairs of functions are inverses of each other? o a. f(x)=x72+8 and 96-9 = 7/x+2) =8 o b. f(x)= 6(x - 2)+3 and g(x) - *#2-3 o c. $4) = 5(2)-3 and 90- 4*: 73 o d. f(x) = 6)-12 and 910 – +12

Ten times the square of a non-zero number is eqaul to ninety times the number

What is the ratio of the length of an object in yards to the length of the same object in miles?