Total bill-$67.95
each friends owes about $16.99
i believe it's 25.2. because if you do 3.6x7= 25.2
Answer:
(f + g)(x) = x² + 4x - 4
Step-by-step explanation:
The statement (f + g)(x) is the same as f(x) + g(x). In other words, the question simply wants you to add the two functions together.
f(x) = 4x + 1
g(x) = x² - 5
(f + g)(x) <----- Original statement
f(x) + g(x) <----- Rewrite
(4x + 1) + (x² - 5) <----- Substitute the equations in f(x) and g(x)
4x + x² - 4 <----- Add 1 and -5
x² + 4x - 4 <----- Rearrange the terms
I always do things differently than I am taught, so here is how I do it...I divide 120 by 100, then I multiply it by 80(because you are finding 80%) I got 96,
Another way to do it is... Divide .8 by 120, the answer is also 96.
Good Luck! Hope I helped:)