An approximation of the total amount of rainfall that falls between 6:00 a. m. and 9:00 a. m. using a midpoint sum with 6 equal subintervals is 9.3 mm.
9.6 mm.
9.7 mm.
9.9 mm.

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

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.

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point