1.which of these pairs of variables would you expect to be  represented by a scatterplot with a negative correlation?

a.
a person's height and the person's grade on the math test

b.
the depth of the water in a pond and the amount of rainfall

c.
the number of miles driven and the number of people on the  bus

d.
the number of concert tickets purchased and the number of  concert tickets still available for purchaseat

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(- 1, 0 )

step-by-step explanation:

an x- intercept is where the function crosses the x- axis.

to find the x- intercept/s look for the value of x when f(x) = 0

from the given table there are 3 values of x where f(x) = 0

when x = - 1, x = 2, x = 3

the one that is listed is (- 1, 0 )

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.