Answer:
10
Step-by-step explanation:
Plug in 5 for x, and 10 for y in the expression:
5 + 7(5) - 3(10)
Remember to follow PEMDAS. PEMDAS is the order of operation, and stands for:
Parenthesis
Exponent (& Roots)
Multiplication
Division
Addition
Subtraction
First, Multiply:
7 * 5 = 35
-3 * 10 = -30
5 + 35 - 30
Combine like terms:
(5 + 35) - 30
40 - 30 = 10
10 is your answer.
~
Answer:
-11
Step-by-step explanation:
let f(c) = 4c - 3
f(-2) = 4(-2) - 3 = -8 -3 = -11
Answer:
each x point should be mapped to a y point
Step-by-step explanation:
Add the two equations together to get 14x=-14. You can get that x=-1. Plugging that in, you get y=0.
So, x=-1
y=0
<span>3x + y = 9
3*5 + y = 9
15 + y = 9
y = 9 - 15
у = -6</span>
