Answer:
21x
Step-by-step explanation:
In the parentheses, 3 * x is the same thing as 3x. Distribute 7 into 3x to get 21x as your final answer.
Answer:
a)$1628.90
b)$1647.00
c)$1648.72
Step-by-step explanation:
The question is on compound interest.
The formula to apply here is;

where
- P=principal /beginning amount
- r=interest rate as a decimal
- n=number of compoundings a year
- t=total number of years
a) If compounded annually, n=1
p=$1000, r=5%=0.05 t=10
Amount will be;

Amount=$1628.90
b) If compounded monthly, n=12
p=$1000, r=5%=0.05, t=10, n=12

Amount=$1647.00
c)If interest compounded continuously, it means the principal is earning interest constantly and the interest keeps earning on the interest earned.Here the formula to apply is;
A=Pe^rt where e is the mathematical constant e=2.71828182846
Hence the amount will be;

Amount=$1648.72
Answer:

Step-by-step explanation:
To solve this problem, first you have to use the distributive property of
.
First, expand.





Next, solve.

In conclusion, the correct answer is -15y-9.
<span>2x+7y=-1 (1)
4x-3y=-19 (2)
multiply equation (1) by 2
4x + 14y = -2 (1')
</span>4x - 3y = -19 (2)
---------------------subtract
17y = 17
y = 1
<span>2x+7y=-1
</span><span>2x+7(1)=-1
</span>2x + 7 = -1
2x = -8
x = -4
answer
(-4, 1)