Answer two questions about Systems A and B: System A System B

x-7y=-3 4x+y=7

4x+y=7 x−7y=−3

1) How can we get System B from System A?

Choose 1

A. Swap only the left-hand sides of both equations

B. Swap the order of the equations

C. Replace one equation with itself where a quantity is added to only one side

D. Replace one equation with itself where the same quantity is added to both sides

2) Based on the previous answer, are the systems equivalent? In other words, do they have the same solution? A. Yes B. No

-Swap the order of the equations

-Yes

Step-by-step explanation: I just guessed

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752

brandon has 4344 video games.  

step-by-step explanation

7373 - 2929 = 4344

pls let me know if it was correct