3x – 7 = 2
A) (3, 7)
B) (7, -7)
C) (-3, 7)
D) (3/4, 2/5)
Hi
We need to solve 3x-7=2 for x
Let's start by adding 7 to both sides
3x-7+7=2+7
3x=9
Now just divide both sides by 3 so we can find the value for x
3x/3=9/3
x=3
Now substitute 3 for x in 4x-y=5 so we can find the value for y
4x-7=5
4(3)-y=5
-y+12=5
Add -12
-y+12-12=5-12
-y=-7
Now divide both sides by -1 so we can find the positive value for y
-y/-1=-7/-1
y=7
The answer is A
(3,7)
Good luck:0
A. -26 B.-9 C. -1 D. 10
The value of g(f(-3)) would be -9 which is the correct answer would be an option (B).
A function is defined as a mathematical phrase that specifies a connection between two variables in algebra.
We have been given the functions below as
f(x) = 3x + 7 and g(x) = 2x - 5
We have to determine the value of g(f(-3))
Substitute the value of f(x) = 3x + 7 in the g(x) = 2x - 5 to get g(f(x))
⇒ g(f(x)) = 2(3x + 7) - 5
Apply the distributive property of multiplication,
⇒ g(f(x)) = 6x + 14 - 5
⇒ g(f(x)) = 6x + 9
Substitute the value of x = -3 in the g(x) = 2x - 5 to get g(f(-3))
⇒ g(f(-3)) = 6(-3) + 9
⇒ g(f(-3)) = -18 + 9
⇒ g(f(-3)) = -9
Therefore, the value of g(f(-3)) would be -9.
Learn more about the functions here:
#SPJ1
77.9 sq mm
c.
70 sq mm
b.
72.5 sq mm
d.
540 sq mm
(c) -4
(d) 4