Question

f(x)=4x+7 find f(3)
a.
15
c.
19
b.
12
d.
5

Answer 1

\[f(x)=4x+7\\ f(3)=4\times3+7=\]

Answer 2

what do you mean

Answer 3

The function (of independent variable \(x\)) is equal to four times the independent variable plus seven,

the function (evaluated when the independent variable is three) is equal to four times three plus seven

Answer 4

ok so confused

Answer 5

which bit is the most confusing?

Answer 6

the whole thing

Answer 7

plug the three into the equation

Answer 8

ok thank you

Answer 9

so it will be 4(3)+7