From the beginning of the day the temperature rose 15° so that by 4 pm it was 87°. what was the temperature at the start of the day? a)72° b)77° c)82° d)102°

What number must you add to complete the square x^2+12x=16

The relative growth rate for a certain type of fungi is 60% per hour.a small culture has formed and in just 6 hours the count shows to be 20,273 fungi in the culture.what is the initial number of fungi in the culture?

Which of the following is the major negative aspect of crossover designs for research studies? a. prohibitive cost b. residual effects c-subject drepout d. incomplete randomization e. large sample size required