PLEASE HELP ill give brainlist its easy math how many marbles could fill up the jar?
The jar is 15 cm

3 # of marbles, x 6.9cm height of water, Y
5 # of marbles, x 7.5cm height of water, Y
9 # of marbles, x 8.7cm height of water, Y
14 # of marbles, x 10.2cm height of water, Y
17 # of marbles, x 11.1cm height of water, Y
23 # of marbles, x 12.9cm height of water, Y

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.

(mc 02.03) what set of reflections and rotations would carry rectangle abcd onto itself? reflect over the y-axis, reflect over the x-axis, rotate 180° rotate 180°, reflect over the x-axis, reflect over the line y=x reflect over the x-axis, rotate 180°, reflect over the x-axis rotate 180, reflect over the y-axis, reflect over the line y=x

What is the expression in factored form? -x^2 + 3x + 28 a. (x-7)(x-4) b. -(x-7)(x+4) c. (x+4)(x+7) d. -(x-4)(x+7)