Write a system of inequalities that describes the possible solutions to the problem.Matt is going to invest no more than $4000 into two accounts earning 2% and 4% simple interest. He would like the accounts to earn at least 
after one year. He wants to invest less than 
in the account earning 4% simple interest. Write a system of inequalities to describe this situation and solve by graphing.
A. x - y ? 4000
0.02x + 0.04y ? 80
x ? 0
y ? 0
B. x + y ? 4000
0.02x + 0.04y ? 80
x ? 0
y ? 1000
C. x + y ? 80
0.02x + 0.04y ? 4000
x > 0
y ? 0
D. 0.02x + 0.04y - 80 ? 4000
x ? 0
y ? 0
Answer: B
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Solve the problem.An auxiliary fuel tank for a helicopter is shaped like the surface generated by revolving the curve 
- 5 ? x ? 5, about the x-axis (dimensions are in feet). How many cubic feet of fuel will the tank hold to the nearest cubic foot?
A. 8 B. 17 C. 21 D. 5
Provide an appropriate response.Let x represent a whole number. If the LCM for x and 5 is equal to the product of 5 and x, what can you conclude about x?i: x is greater than 5 ii: x is smaller than 5iii: 5 is not a factor of xiv: 5 is a factor of x
A. iv only B. ii and iii C. iii only D. i and iii
Write expanded notation.The projected population in 2050 for a certain country is 4,297,476.
A. 6 millions + 7 hundred thousands + 4 ten thousands + 9 thousands + 7 hundreds + 2 tens + 4 ones B. 4 hundred thousands + 2 ten thousands + 9 thousands + 7 hundreds + 4 tens + 7 ones + 6 C. 4 millions + 2 hundred thousands + 9 ten thousands + 7 thousands + 4 hundreds + 7 tens + 6 ones D. 4 millions + 2 hundred thousands + 9 ten thousands + 7 thousands + 4 tens + 7 ones + 6
Choose the most reasonable metric length unit. Choose from km, m, cm, and mm.The boy is 1.5 
tall.
A. km B. m C. cm D. mm