Answer:
see explanation
Step-by-step explanation:
given
y = 3x² + 4 ( isolate the term in x by subtracting 4 from both sides )
y - 4 = 3x² ( divide both sides by 3 )
= x² ( take the square root of both sides )
= x, or
x =
Square root both sides and you get:
X=8
Answer:
17/6
Step-by-step explanation:
22*3=66+1=67
6*4=24+3=27
67/3-27/4 lowest common multiple of 3 and 4 is 12
67*4=268
27*3=81
268-81/12=17/6
Answer:
Step-by-step explanation:
Alexa earns $33,000 in her first year of teaching and earns a 4% increase in each successive year. This means that for each year, her income is 104% of the previous year. So the rate of increase is 104/100 = 1.04. This rate is in geometric progression. The formula for the sum of n terms of a geometric sequence is expressed as
Sn = a(r^n - 1)/r-1
Where
Sn is the nth term
a is the first term
n is the number of terms.
r is the rate or common ratio
From the information given,
a = 33000
r = 1.04
The formula for Alexis total earning over n years will be
Sn = 33000(1.04^n - 1)/(1.04 - 1)
Her earnings for the next 15 years would be
S15 = 33000(1.04^15 - 1)/(1.04 - 1)
S15 = 33000(0.8009) / 0.04
S15 = $668167.50
Answer: The answer is 4.36
Explanation: 0.48 x 3 = 1.44
0.73 x 4 = 2.92
1.44 + 2.92 = 4.36
