(04.01) The Baldwin family walked 4/5 of a mile in 4/9 of an hour. What is their unit rate?

Evaluate the expression for the given value of the variable. ∣-4b-8∣+∣-1-b^2 ∣+2b^3 ; b=-2

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?