Answer:
The grandson is 7 & the granddaughter is 5.
Step-by-step explanation:
The SUM of their ages have to = 12 years of age.
So if 7+5=12
and the 2 years difference in age, reaching 7-5=2
This makes the boy 7 & the girl 5, being 2 years younger.
Answer:
4x + 20 ------------ Expression
4x + 20 > 40 ------------- Inequality
4x + 20 = 40-------------Equation
<u>We are given:</u>
f(x) = 3x + 8
g(x) = -x³
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<u>The Concept:</u>
We have to find the values of f(g(3)), which means that we have to apply the function g() on 3 and apply the function f() on the value we get.
<u>Finding f(g(3)):</u>
<u>Finding g(3):</u>
g(x) = -x³
g(3) = -(3)³
g(3) = -27
<u>Finding f(g(3)):</u>
f(x) = 3x + 8
f(g(3)) = 3(g(3)) + 8
f(g(3)) = 3(-27) + 8
f(g(3)) = -81 + 8
f(g(3)) = -73
Hence, f(g(3)) = -73
7 because it is repeated thrice