Use interval notation to represent all values of x satisfying the given conditions. y = 6 - 2(2 - x) and y is at most 18.

a. (-∞, 8)

b. (-∞, 8]

c. (-∞, 9]

d [8, ∞)

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet

Match each function with its rate of growth or decay

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?