Gloria is trying to save for retirement. She deposits $400 each month for 20 years into an account that pays 4.2% compounded interest. How much will she have in the account at the end of 20 years round to the nearest dollar)?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

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

Select all expressions that are equivalent to 2(3x + 7y). question 1 options: 6x + 14y 6x + 7y 1(6x + 14y)