<span>The phone company charges 10 cents to connect a call for one minute and 8 cents per minute after that.
We call x minute to talk after the first minute.
We have 10+8x</span>≤100 (cents)
and 8x≤100-10
or 8x≤90 and x≤90:8
and x≤11.25
So: <span>How long could you talk on the phone for 1 dollar: it is 11 minute and 15 seconds</span>
I think it would be 4x^2 and 3x^3 because they both have the same "x". Because you can't add, for example, 5x + 7z, they aren't alike. That's why you have to choose like terms, for example, 5x+ 5x= 10x.
Answer:
The values of x are
Step-by-step explanation:
we have
Group terms that contain the same variable, and move the constant to the opposite side of the equation
Factor the leading coefficient
Complete the square. Remember to balance the equation by adding the same constants to each side.
Rewrite as perfect squares
Square root both sides
Answer:
62.5% or 63%
Step-by-step explanation:
He has $8. To find the percent of money that he spent on the purchase you put the amount spent over the total amount.
In this case, he spent $5. You would put that $5 over the $8, 5/8. When you divide, you get 0.625. To get a percent, you would multiply this number by 100. You end up with 62.5, or 63 if you round up.
