7. A rectangular area is 5 yards longer than it is wide, and it covers 126 square
yards. Find its dimensions.

Step-by-step explanation:

1.  x is the width and length is x+5.  

2. x(x+5) = 126

3. x^2 + 5x = 126

4. subtract 126 from each side to set to zero

5. x^2 + 5x - 126 = 0

6. factor

7. (x+14)(x-9)=0

8.  x can equal -14 or 9 but -14 doesn't make sense in this problem because a length can't be negative

9. so width is 9 and length is 14

step-by-step explanation:

5x + 5

step-by-step explanation:

you should always add the diagrams and graphs we cannot see. this particular question is kind of borderline because we can make a graph for you.

(f + g)x = -x^2 +3x + 5 + x^2 + 2x

(f + g)x = 5x + 5

the graph of z = 5x + 5 is shown below. always use desmos when in doubt.