F(x) = 2(x+8)
12 = 2x + 16
2x = <span>12 - 16
2x = -4
x = -2</span>
30 students, or 100% are in Mr. Holland's music class.
30% of 30 play in a school band.
[NOTE: How to calculate percentage of something]
*100% times 0.[%]*
30 times 0.30 = 9.
Answer: 9 students play in a school band.
Answer:
28
Step-by-step explanation:
V = (1/3)Bh
V = (1/3)(7 ft)(2 ft)(6 ft)
V = 28 ft^3
Answer:
Step-by-step explanation:
If the value of the TV decreases by 14% each year, then the rate is exponential.
We would apply the formula for exponential growth which is expressed as
A = P(1 + r/n)^ nt
Where
A represents the price of the TV after t years.
n represents the periodic rate at which the decrease is calculated.
t represents the number of years.
P represents the initial price of the TV.
r represents rate of decrease in value of the TV.
From the information given,
P = $1500
r = 14% = 14/100 = 0.14
n = 1
A = y
Therefore, the function would be
y = 1500(1 + 0.14/1)^ 1 × t
y = 1500(1.14)^t
Answer:
24/100
Step-by-step explanation: