Gustavo and yuki were asked to find an explicit formula for the sequence 19, 0, -19, -

Step-by-step explanation:

It's an arithmetic sequence.

The difference is constant.

The explicit formula of an arithmetic sequence:

Substitute:

            use distributive property

step-by-step explanation:

from the graph attached below:

domain of graph is the value of x for which the given function profit function p(x) is defined.

(a) the domain represents the number of years for which the outlet will earn a profit.

range of profit function defines the lowest to highest value of profit earned.

(b) the range of this function is (0 , 160 ). for this function, the range represents the outlet's profit earned.

94

step-by-step explanation:

average the numbers and use a variable to figure out the minimum to get a 90.

(79+94+91+92+x)/5=90

x = 94