I need help on this anyone who answers correctly gets brainliest!! B. How much interest does the college savings account earn at the end of the first year? At the end of the second year? At the end of the third year?

11,200

Step-by-step explanation:

Account opened: August 1st, with $400.

1 yr : 400+600= $1000 2 years old: 1000+600= $1600 3 years old: 1600+600=$2200 4 years old:2200+600=$2800 5 years old: 2800+600=$3400 6 years old:3400+600=$4000 7 years old:4000+600=$4600 8 years old:4600+600=$5200: 9 years old:5200+600=$5800 10 years old:5800+600=$6400 11 years old:6400+600= $7000 12 years old:7000+600= $7600 13 years old:7600+600=$8200 14 years old:8200+600=$8800 15 years old:8800+600=$9400 16 years old:9400+600= $10,000 17 years old:10,000+600=10,600 18 years old:+600=11,200

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step-by-step explanation:

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752