Solve and check: 3 x2 + 5x + 6 + x − 1 x + 2 = 7 x + 3

3 -2x +5=0

Step-by-step explanation:

Combine liked terms:

3+5x+x-1x+6+2=7x+3

3+6x-1x+8=7x+3

3+5x+8=7x+3

Subtract 3: 3+5x+8-3=7x+3-3

3+5x+5=7x

Now subtract 7x:

3+5x+5-7x=7x-7x

If you want combine liked terms:

3-7x+5x+5=0

3-2x+5=0

Hope this helps!

choice b is correct

step-by-step explanation:

we have been given the following system of linear inequalities;

we are required to graphically determine the solution to these system of inequalities. using a graphing tool, the solution is as shown in the attachment below;

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)