Answer:
The answer to your question is: x = 7; y = 6
Step-by-step explanation:
2x+y=20 ( 1 ) Multiply by 5
6x−5y=12 ( 2 )
5 (2x+y=20) = 10x + 5y = 100
10x + 5y = 100
6x − 5y = 12 Eliminate y
16 x = 112
x = 112 / 16
x = 7
2(7) + y = 20 Substitution
14 + y = 20
y = 20 - 14
y = 6
The sign of the product of -21 and 451 is going to be negative. That is because of the rule when you are multiplying a positive number times a negative number. A positive number times a negative number will always be negative. Here are some helpful rules to know:
positive * positive = positive
negative * positive = negative
negative * negative = positive (the negatives cancel each other out)
Since this question has numbers that fit the second case, the answer will be negative.
Answer:
f(x) = 150 + 45x
Step-by-step explanation:
<u>Step 1: Convert words into an expression</u>
Ms. Watson receives a base pay of $150, plus a commission of $45 on each appliance that she sells.
<u>So when there is a base pay, that means f(x) = 150</u>
When she works on commission and she get $45 per appliance, that means f(x) = 150 + 45x
Answer: f(x) = 150 + 45x