1. the graph shows two lines, a and b.

graph down below

based on the graph, which statement is correct about the solution to the system of equations for lines a and b?
(4, 4) is the solution to line a but not to line b.
(4, 4) is the solution to both lines a and b.
(5, 1) is the solution to line b but not to line a.
(0, 2) is the solution to both lines a and b.

2. two lines, r and m, are represented by the following equations:

line r: 2x + 2y = 18
line m: x + y = 9

which statement is true about the solution to the set of equations?

it is (18, 9).
it is (9, 18).
there are infinitely many solutions.
there is no solution.

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

Michelle and julie work at a catering company. they need to bake 264 cookies for a birthday party that starts in a little over an hour and a half. each tube of cookie dough claims to make 36 cookies, but michelle eats about 1/5 of every tube and julie makes cookies that are 1.5 times as large as the recommended cookie size.it takes about 8 minutes to bake a container of cookies, but since julie's cookies are larger, they take 12 minutes to bake. a. how many tubes should each girl plan to bake? how long does each girl use the oven? b. explain your solution process what did you make? c. what assumptions did you make?

Hurrya vegetable garden and a surrounding path are shaped like a square that together are 11ft wide. the path is 2ft wide if one bag of gravel covers 9 square feet how many bags are needed to cover the path