You need to simplify so one-fifth would be 3/15 and 2/3 would be 10/15 so you need to add that together and it would be 13/15
5 years because when you divide 90 by 18 to get how many years it takes the tree to grow to 90 inches tall, you get 5.
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
You first want to do 1200-928 and you get 272 and since she doesn’t have 300 to spend you can do 300 ≠ 272