Part A Select all the equations that you get when you write – x2 + 2x + 3 = x + 1 as a system of equations.
A y = -x2 + 2x + 3
B. y = -x-1
C. y = x2 + x + 2
D. y = x + 1
E. y = 2x + 2
Part B
Find the solution of the system by graphing.
and x =

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

Which equation shows the variable terms isolated on one side and the constant terms isolated on the other side for the equation -1/2x+3=4-1/4x? a. -1/4x=1 b. -3/4x=1 c. 7=1/4x d. 7=3/4x