Answer:
$8.75
Step-by-step explanation:
Create a proportion where x is the cost for 7 bags:
= 
Cross multiply and solve for x:
4x = 35
x = 8.75
So, the cost of 7 bags is $8.75
F(-3)=-2(-3)^2-5(-3)+4 <---- Plug in -3
F(-3)=-2(9)+15+4
F(-3)=-18+15+4
F(-3)=7
F(-3)=7
Answer
the way
Step-by-step explanation:
to salvation
You would just write f(x) (f of x) in for y: f(x) = 7x + 8.
Hope it helps.
5cos2(x + 45) - 7
The period for cos = 2pi/k
The k = 2 so the period = pi
<span>The phase shift is 45 degrees to the left.</span>