How am any zeros are in the simplified expression 4 times 10^ x? a. x b. x -1 c. x+1. d. 4x. which one is it? a or b or c or d?

What is the value of y? round to the nearest tenth

Calculate the density of benzene if 300ml of it weighs 263g. a. 0.88 g/ml b. 1.14 g/ml c. 78,900 g/ml d. 37 g/ml

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective