Which of the following is an exponential decay model? A. y=1/2(3)^x
B. y=-2(2)^x
C. y=3(1/2)^x
D. y=-3(3/2)^x

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

Evaluate the expression for the given value of the variable. ∣-4b-8∣+∣-1-b^2 ∣+2b^3 ; b=-2

Collin did the work to see if 10 is a solution to the equation r/4=2.4