Answer:
x=-2 x=-1
Step-by-step explanation:
f(x)=x² +3x+2
Set the function equal to zero
0=x² +3x+2
Factor
What 2 numbers multiply to 2 and add to 3
2*1 = 2
2+1 = 3
0 = ( x+2) (x+1)
Using the zero product property
x+2 =0 x+1 =0
x=-2 x=-1
The initial fee for a gym membership is $10 and for each month of the membership it costs $5. Jem has been going to the gym for 8 months, what is the total cost?
Answer:
153.86
Step-by-step explanation:
i did this before
Answer:
m = - 7
Step-by-step explanation:
Given
6(m - 1) = 3(3m + 5) ← distribute parenthesis on both sides
6m - 6 = 9m + 15 ( subtract 9m from both sides )
- 3m - 6 = 15 ( add 6 to both sides )
- 3m = 21 ( divide both sides by - 3 )
m = - 7
So for these types of questions you want to substitute the value given into the equation...
So for a,
f(x)=2x-7
f(-3)=?
well instead of x you place -3,
so
f(-3)= 2*-3 - 7
So now you solve using order of operations (PEMDAS)
So,
2*-3=-6 So,
f(-3)=-6-7
-6-7=-13
So,
f(-3)=-13
Try to do that for the others and I'll let you know if you're right. Good luck!