Answer:
Answer A. 80
Step-by-step explanation:
The abscissa of the ordered pair, that is the x-coordinate, is equal to 1 and the ordinate, the y-coordinate, is equal to -1. In the cartesian plane, this point lies in the fourth (IV) quadrant. The standard position of the angle is that which has one of its side is in the x-axis.
Solve for the hypotenuse of the right triangle formed.
h = sqrt((-1)² + (1)²) = √2
Below items show the calculation for each of the trigonometric functions.
sin θ = opposite/hypotenuse = y/h = (-1)/(√2) = -√2/2
cos θ = adjacent/hypotenuse = x/h = (1)/√2 = √2/2
tan θ = opposite/adjacent = y/x = -1/1 = -1
Answer:
(a) The net profit for walking 3 dogs is $40
(b) The net profit for walking 6 dogs is $100
Step-by-step explanation:
There are mistakes in your question; however, the correct given parameter is

Required
Interpret p(3) = 40 & p(6) = 100
Interpreting p(3) = 40
Comparing this to 
d = 3 & p(d) = 40
This implies that:
The net profit for walking 3 dogs is $40
Interpreting p(6) = 100
Comparing this to 
d = 6 & p(d) = 100
This implies that:
The net profit for walking 6 dogs is $100