To determine the number of trout in a​ lake, a conservationist catches 113 trout, tags them and throws them back into the lake.​ Later, 42 trout are​ caught; 13 of them are tagged. How many trout would the conservationist expect to be in the​ lake?

I do not know

3.4 pizzas

step-by-step explanation:

given is a scatter plot showing number of pizzas sold during weeks for different issues of coupon

y represents number of pizzas sold and x number of coupons issued

y is marked verticaly and x horizontally

the trend line is given as

y =3.4x+43

this says that even when no coupon is issued pizzas sold will be 43

and rate of change of pizza sold for 1 unit of coupon = slope = 3.4

i.e. when x increases by 1 unit y increases by 3.4 units

hence for each additional coupon issued 3.4 pizzas more will be sold

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.