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38 votes
38 votes
CAN SOMEONE PLEASE PLEASE HELP ME?? I’LL GIVE YOU FREE EASY POINTS AND IT’S ONLY 4 QUESTIONS. JUST MAKE SURE YOU GIVE THE RIGHT ANSWERS PLSS. THE PICTURE IS ABOVE IF ANYBODY NEEDS TO SEE IT!

CAN SOMEONE PLEASE PLEASE HELP ME?? I’LL GIVE YOU FREE EASY POINTS AND IT’S ONLY 4 QUESTIONS-example-1
User Florian Thuin
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1 Answer

15 votes
15 votes

Answer:

Explanation:

1. To find f(0.5), substitute the x value in the function f(x) with 0.5

f(x) = 30x + 5

f(0.5) = 30*0.5 + 5

= 15 + 5

= 20

At 0.5 gigabytes of data used, the cost is $20

2) g(x) = 10x + 20

g(0.5) = 10*0.5 + 20

= 5 + 20

= 25

At 0.5 gigabytes of data used, the cost is $ 25.

3) f(x) = 50

30x + 5 = 50

Subtract 5 from both sides

30x = 50 - 5

30x = 45

Divide both sides by 30

x = 45/30

x = 1.5

If she chooses plan 'f', she could use 1.5 gigabytes.

g(x) = 50

10x + 20 = 50

10x =50- 20

10x = 30

x = 30/10

x = 3

If she chooses plan 'g', she could use 3 gigabytes.

4) Function 'g' would be better for a $50 monthly budget as she could get more gigabytes than function 'f'

User Sadraque Santos
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2.9k points