If you flip a coin 4 times, how many times it is most likely to land with heads up?

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Aclothing designer is selecting models to walk the runway for her fashion show. the clothes she designed require each model’s height to be no more than y inches from 5 feet 10 inches, or 70 inches. which graph could be used to determine the possible variance levels that would result in an acceptable height, x?

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