Kayla wants to find the width, ab, of a river. she walks along the edge of the river 100 ft and marks point c. then she walks 22 ft further and marks point d. she turns 90 degrees and walks until her location, point a, and point c are collinear. she marks point e at that location. suppose de = 32 ft. what can kayla conclude about the width of the river? explain.

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb