Sianna bought 3 pens, 4 notebooks, and a calculator. the calculator cost $25. if x represents the cost of each pen and y represents the cost of each notebook, which expression represents the amount of change sianna should receive from $50?
*3x + 4y +25
*50 – (3x + 4y)
*50 – (3x + 4y + 25)
*3x + 4y + 25 + 50

Consider circle h with a 3 centimeter radius. if the length of minor arc what is the measure of zrst?

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655

20 points 1. your friend, taylor, missed class today and needs some identifying solutions to systems. explain to taylor how to find the solution(s) of any system using its graph. 2. taylor graphs the system below on her graphing calculator and decides that f(x)=g(x) at x=0, x=1, and x=3. provide taylor some feedback that explains which part of her answer is incorrect and why it is incorrect. f(x)=2x+1 g(x)=2x^2+1