Lena has $150 saved for a car. she gets a job to save even more money. she earns $532 for four weeks' worth of work. how much will she have saved in all after working for 25 weeks?

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

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

Which of the following circles have their centers on the x-axis? check all that apply.