The heights of a group of 3-year-olds at a preschool averaged 35.2 inches, with a standard deviation of 1.2 inches. Assuming a normal distribution,
estimate the probability that a randomly selected 3-year-old is between 32.8 in, and 36.4 in. in height.

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year

The graph represents f(x)=[x]+3. what is f(-2.2)?