What is the position of 7 in the number 876,543?

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265