Brittany babysat for 21 hours and earned $3. Pia was paid $20 for babysitting for 75 hours. On average, how many dollars per hour was Brittany paid to babysit? On average, how may dollars per hour was Pia paid to babysit? Use unit rates to determine who earns a higher hourly rate. ​

How many triangles can be drawn with side lengths 4 centimeters, 4.5 centimeters, and 9 centimeters? explain

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?

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