You can substitute “x” For your answer and solve the problem that way ^^
It’s a a way to “check” yourself.
If it doesn’t fit in and you not get the answer shown the x substitute is incorrect.
I personally think they are right! I also have a test on two step/one step equations lol
I'm not sure but i think it is $9
12-inch diameter costs $8.64, how much
should a pizza with a 16-inch diameter cost?
Answer: A 16 inch pizza is $11.52
Step-by-step explanation:
$8.64 / 12 = $0.72
$0.72 x 16 = $11.52
Take the amount ($8.64) and divide it by 12 (for the 12 inch pizza) and you get $0.72 for every inch of the pizza.
Then take $0.72 and times it by 16 (for the 16 inch pizza) and you get $11.52 and there is your answer.
Direct proportionality is used here to find the cost of a 16-inch pizza. Each inch of diameter costs $0.72, so a 16-inch pizza will cost $11.52.
The cost of a pizza in this instance is directly proportional to its diameter. Whenever such a situation arises, we use the concept of 'ratios' to determine the unknown value. In this particular question, the ratio of cost to diameter is the same for both pizzas.
The pizza with a 12-inch diameter costs $8.64, implying that every inch of diameter costs $8.64/12, or $0.72. If a 16-inch pizza is bought, the cost would then be 16 * 0.72, or $11.52.
#SPJ11
Answer:136
Step-by-step explanation:i multiplied 45 by 3 and got 135 and subtracted that from 271. hope this is right :)