The surface area S (-) (in square meters) of a spherical balloon with radius r meters is given by S(r) = 4xr?. The radius P (1) (in meters) after t seconds is given by P (t) = .
Write a formula for the surface area N (t) (in square meters) of the balloon after t seconds.
It is not necessary to simplify.

What is the value of y? round to the nearest tenth

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 33 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30 ∘c on monday, but decreased at a constant rate in the next 33 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line