Question

90 POINTSSSSSSSSSSS

Answer 1

All he has to do is graph the two system of equations and then see where they intersect. Hope I helped

Answer 2

Y=3ˣ and y=2x+1
one of them is the grouth of the flies and the other is how many the iguana can eat per week (I'm thinking the y=3ˣ is the population growth)
where x=number of weeks and y=number of flies

so he should graph y=3ˣ and y=2x+1 and see the solution wich will be the inersection point of the 2 equations

to graph y=3ˣ, graph the points (0,0) and (1,3) and (2,9) and (5,243) then connect the points in a curve

to graph y=2x+1, graph the points (0,1) and (2,4) then connect the points with a straight line

where they intersect is the week and number of flies
to graph y=2x+1