Find the sum or difference.
- 
A. 
B. -1
C. 
D. 
Answer: A
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A satellite has an initial radioisotope power supply of 80 watts (W). The power output in watts is given by the formula below, where t is the time in days. Solve for t to find the time when the power supply is 25W.
?
?
Please round your answer to the nearest whole.
?
t = __________ days
Fill in the blank(s) with the appropriate word(s).
The currents in an electrical network are given by the solutions of the system
where I1, I2, and I3 are measured in amperes. Solve the system of equations using matrices.
A) I1 = 4, I2 = 5, I3 = 9 B) I1 = 2, I2 = 3, I3 = 6 C) I1 = 2, I2 = 3, I3 = 5 D) I1 = 4, I2 = 9, I3 = 5 E) no solution
Solve the problem.If $6000 is invested at interest rate i, compounded quarterly, it will grow in 4 years to an amount A, in dollars, given by A = 6000
16. Find the rate of change, 
.
A. 
= 96,000
15
B. 
= 96,000
16
C. 
= 24,000
15
D. 
= 24,000
16
Solve using the addition principle.8 = b + 10
A. -18 B. 18 C. 2 D. -2