Dave Flip a coin 20 times and got heads on eight of the flips Based on Dave's results what is the experimental probability of the coin landing on heads?

The radius of a sphere is 3 inches. which represents the volume of the sphere?

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol