The price of a sandwich is $1.50 more than the price of a smoothie, which is d dollars. what does the expression d + 1.5 represent?

What are “like terms”? why can we only add like terms?

Find the distance between (0,5) & (-4,2)

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”?