Kita's phone had a fully charged battery. With normal usage,
her phone will last 18 hours. How much time is left on kita's
phone battery with 12% charge remaining?

What is the area of triangle abc if a = 8, b = 11, and c = 15?

What is the equation of a line passing through (-6,5) and having a slope of 1/3

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.