PLSSS ANSWER THIS I WILL MARK BRAINLIEST CROWN THINGY BUT DO NOT LOOK IT UP PLS UR OWN WORDS! THANK YOU SM!

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?

What is the factored form of the following expressions? d^2 – 13d + 36

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered