Answer:
<em>She will take 10 weeks to save the money for the DVD player</em>
Step-by-step explanation:
Let w = Lianne's weekly allowance.
The DVD player costs 2 1/2 times her weekly allowance, thus
DVD cost = 5/2w
She gets w every week but spends 3/4w on other things, thus the remaining money is
Weekly savings =w - 3/4w = 1/4w
To know the number of weeks needed, we divide the DVD cost by the weekly savings:
Operating:
N = 10
She will take 10 weeks to save the money for the DVD player
Answer:
7/10
Step-by-step explanation:
Answer: C. 7.5%
Solve as decimal
0.5*0.15=0.075
Move two decimal points over
0.075 -> 7.5
Change back to percent
7.5%
Answer:
(-7,4] or -7 < X ≥ 4
Step-by-step explanation:
The domain is all applicable X values for the function. In this function, X can be greater than but not including -7, but has to be less than 4 (inclusive).
You can write your answer as (-7,4] or -7 < X ≥ 4.
The area of the floor is (16-ft x 14-ft) = 224 square feet.
IF carpet cost $16 per square foot, THEN enough carpet
to cover that floor would cost
(224) x ($16) = $3,584 ,
and PLUS, you'd need to buy 224 square feet of pad to lay down
under the carpet, and pay more to have the whole thing installed.
That's an awful lot of money for a little dinky 12' x 14' bedroom !
Carpet does NOT cost $16 per square foot.
It's more like $16 per square YARD (plus pad and installation).
9 square feet = 1 square yard.
The area of the bedroom is (224/9) = 24-8/9 square yards
At $16 per each of those, the carpet costs (24-8/9) x ($16) = $398.22 .
Much more reasonable !
