Answer: a = 18
explanation:
2(a + 10) = 56 -> distribute the 2
2a + 20 = 56 -> subtract 20 from both sides
2a = 56 - 20
2a = 36 -> divide both sides by 2
a = 18
Percent increase
find increase
then divided that by original
562157+531285=30872=increase
now put that over original
30872/531285=0.05810817/1
percent means partst out of 100
make bottom number 100
0.05810817/1 times 100/100=5.810817/100=5.810817%
thousanth
5.811%
Should I answer all the questions? or a specific one?