A lawn sprinkler waters Kara's yard in a circular motion. The lawn sprinkler can water grass within a 7 foot radius. What is
the area of the yard that is watered by the sprinkler?
A. 43.98 ft?
B. 87.96 ft?
C. 153.94 ft?
D. 615.75 ft?
А
B
Ο Ο Ο Ο
Active Windo

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered