Question

The value of a professional basketball player's autograph rose 20% in the last year. It is now worth $288.00. What was it worth a year ago?

$220.00
$240.00
$230.00
$260.00

Answer 1

@hlee13

Answer 2

Sorry .. I don't do math .. I'm strickly history and government .. everything else I wouldn't be comfortable

Answer 3

x + .20x = 288
1.20x = 288
x = 288/1.20
x = 240

check...
240 + .20(240) = 288
240 + 48 = 288
288 = 288 (correct)

answer is 240

Answer 4

do you have any questions at all ?

Answer 5

A zookeeper predicted the weight of a new baby elephant to be 258 pounds when it was born. The elephant actually weighed 290 pounds at birth. What was the percent error of the zookeeper's prediction?

88.97%
12.40%
11.03%
32%

Answer 6

290 - 258 = 32
32/290 = 0.1103 changed to percent = 11.03%
I think that is how you do it. You might better get a second opinion

Answer 7

Sam opened a money-market account that pays 2% simple interest. He started the account with $7,000 and made no further deposits. When he closed the account, he had earned $420 in interest. How long did he keep his account open?

4 years
3 years
6 years
5 years

Answer 8

that was right thz

Answer 9

I = PRT
420 = (7000)(.02)(T)
420 = 140T
420/140 = T
3 = T

It took 3 years

Answer 10

3.
Bert is planning to open a savings account that earns 1.6% simple interest yearly. He wants to earn exactly $256 in interest after 2 years. How much money should he deposit?

$800
$80
$8,000
$4,096

Answer 11

I = PRT
256 = P(.016)(2)
256 = .032P
256/.032 = P
8000 = P

I think I did that right...answer is 8000

Answer 12

Andy estimated that he would need 72 feet of lumber for a tree house project. He later found that the actual amount of lumber needed was 61 feet. What was the percent error of Andy's estimation?

15.28%
11%
84.72%
18.03%

Answer 13

@texaschic101