Exponent rule : a^-x = 1/a^x
x^-9 * x^-2 =
1/x^9 * 1/x^2 = (when multiplying exponents with same base, add exponents)
1/x^(9 + 2) =
1/x^11
1999 +1476
= 1999 +1476 +1 -1
= (1999 +1) +(1476 -1)
= 2000 +1475 . . . . . . . . corresponds to the 1st selection
How many miles did the cars go? You can’t solve the question without that.
A last week Rosemary walked at a faster pace
