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
Answer:
25.35 seconds
Step-by-step explanation:
Add 26.1 + 24.3 + 32.8 + 18.2 = 101.4
101.4 ÷ 4 = 25.35
-1.2 the parentheses only separate the number and if no sign is in between it usually means multiply
The graph in the top left hand corner. A