D is the only x-intercept out of the options listed below.
In order to find an x-intercept, you need a value that will cause the y-value to equal 0, since this is where x-intercepts exist.
Automatically, A and B do not work since the y-values in the ordered pairs do not equal 0. By definition they are not x-intercepts. Next we can try the x-values in the equation to see which gives us a 0 y-value.
C
f(x) = (x + 6)(x - 3)
f(6) = (6 + 6)(6 - 3)
f(6) = (12)(3)
f(6) = 36
Since this does not equal 0, it is not an x-intercept.
D
f(x) = (x + 6)(x - 3)
f(-6) = (-6 + 6)(-6 - 3)
f(-6) = (0)(-9)
f(-6) = 0
This shows us that D yields a 0 value for y and is thus a x-intercept.
Cary x+7. In 3 yrs x+10
Dan x. In 3 yrs x+3
x+10+x+3=83
2x+13=83
2x=83-13
2x=70
x=70/2
x=35
Cary is 42
Dan is 35
Answer:
You will pay $4
Your savings are $12
Step-by-step explanation:
3/4 =0.75
Multiply 16 x 0.75 =12
Subtract 16-12=4
You will pay $4
Your savings will $12
Step-by-step explanation:
X+100=180(linear pair)
X=180-100
X=80
30+y+x=180(sum of angle of triangle)
Y=180-110
Y=70