#1 cause the slope is 7 and the y-intercept is -2
1 notebook costs $3.45
let's turn this into 2 equations, n being notebook price, and b being binder price ->
mandy -> 3n + b = 5.85
jordan -> 2n + b = 4.65
we need to take one equation, simplify for b, and plug it into the other equation, let's take jordan's equation for this ->
b = 4.65 - 2n
plug it into mandy's equation
3n + (4.65 - 2n) = 5.85
simpify until you get n = 1.20
take this and plug it back into jordan's equation ->
2(1.20) + b = 4.65
simplify until you get b = 2.25
plus this value into mnady's equation ->
3n + (2.25) = 5.85
simplify until you get that n = 2.25
Find the volume of the cylinder, then the volume of the empty space. Finally, we subtract these.
V = pi * r^2 * h
V = 3.14 * 3^2 * 12
V = 339.12
So the volume of the bottle of lotion is 339.12.
V = pi * r^2 * h
V = 3.14 * 0.5^2 * 12
V = 9.42
So the volume of the empty space in the bottle of lotion is 9.42.
Subtract these:
339.12 - 9.42 = 329.7
Answer:
for the first one they are opposite angles so they are the same degrees so x=15 I forget adjacent angles so idk the second one sorry