A students cell phone plan has a monthly charge of $40 for 600 minuets of uses and a 0.25/minutes charge for each additional min
1 answer:
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There are 2 roots so the only way to complete the square is,
Just factor 2 out of 2x^2+8x (just ignore the -9) then find the number that will make the terms be able to complete the square.
then complete the square and multiply 2 inside the brackets.
subtraction as you already get the vertex form and know how to complete the square.
Vertex Form:
Answer:
He will save $7,248 in 2 years.
Step-by-step explanation:
The whole explanation is in the picture :)
