Answer:
A
Step-by-step explanation:
If factors are only rounded up, then the estimate is an overestimate. If factors are only rounded down, then the estimate is an underestimate. When some factors are rounded up and some are rounded down, it is harder to tell whether the estimate is an overestimate or an underestimate.
8.3 because .3 is in the tenths place but .03 is in the hundredths place, which is smaller.
One possible solution for the system of inequalities is given as follows:
13 dimes and 2 nickels.
<h3>How to obtain the system of inequalities?</h3>
The first step in obtaining the system of inequalities is identifying the variables, which are given as follows:
- Variable x: number of dimes that Tallulah has.
- Variable y: number of nickels that Tallulah has.
Tallulah has at most 18 coins, hence:
x + y ≤ 18.
A nickel is worth 5 cents = $0.05, while a dime is worth 10 cents = $0.1, and Tallulah has at least $1.20 combined, hence:
0.1x + 0.05y ≥ 1.20.
The solution is given by the shaded region on the image given at the end of the answer, and one possible solution is given as follows:
x = 13, y = 2.
Which means that she has 13 dimes and 2 nickels.
More can be learned about a system of inequalities at brainly.com/question/9774970
#SPJ1