Answer:
-20
Step-by-step explanation:
y = -3x+1
if the input is 7, it means x=7 so substitute in the equation
y= -3*7+1 = -21+1= -20 which is the output
Answer:
$308
Step-by-step explanation:
First, you have to find out how much it costs per pound, so you would divide 231 by 21. each pound of potatoes costs $11. so 11 x 28 would make it $308.
Answer:
9x + 2
Step-by-step explanation:
Because you are multiplying an unknown number by 9, it would be considered 9*x or 9x.
Then, you add 2, because when you increase in math, you are adding.
Therefore, the final product is 9x + 2.
