You’re going to use your ti-83 graphing calculator to compute the area between values of 7 and 9 for a distribution whose mean is 8 and whose standard deviation is 2. you would enter:

a) normalcdf (7,9,8,2)
b) normalpdf (7,9,8,2)
c) invnorm (8,7,9)
d) normalcdf (8,2,7,9)
e) normalpdf (8,2,7,9)

Dee used 2 1/3 cups of sugar for a cake recipe. if the amount of sugar the container holds is 3 times the amount she used, does the container hold more than, less than, or equal to 3 cups of sugar? explain.

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a.the profit when the unit price is equal to 0b.the unit price(s) when the profit is equal to 0c.the profit when the unit price is greatestd.the unit price(s) when profit is greatest