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If f(x)=3x+5 evaluate f(7) -f(5)
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4 votes
If f(x)=3x+5 evaluate f(7) -f(5)

User Mscho
by
4.7k points

2 Answers

4 votes

Answer:

  • 6

Explanation:

Given that ,f(x)=3x+5

we have to find f(7) -f(5)

so,

f(7)=3(7)+5=21+5=26

again,

f(5)=3(5)+5=15+5=20

So,

f(7) -f(5)=26-20=6

User Dave Flynn
by
4.8k points
4 votes

Answer:

6

Explanation:

f(x)=3x+5

f(7) means let x=7

f(7) = 3(7) +5 = 21+5 = 26

f(5) means let x = 5

f(5) = 3*5+5 = 15+5 = 20

f(7) - f(5) = 26 -20 = 6

User Mohammad Mirmostafa
by
4.4k points
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