Solve, using the substitution method, and check.
A. (12, -13)
B. (7, -8)
C. (6, -9)
D. (7, 8)
E. (4, -11)
Answer: B
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A box contains $4.10 in nickels, dimes, and quarters. There are 24 coins in all, and the sum of the numbers of nickels and dimes is two less than the number of quarters. How many coins of each kind are there?
A. 3 nickels, 8 dimes, and 14 quarters B. 4 nickels, 7 dimes, and 13 quarters C. 4 nickels, 4 dimes, and 14 quarters D. 5 nickels, 6 dimes, and 13 quarters E. 6 nickels, 5 dimes, and 13 quarters
Write a positive or negative fraction to describe the situation.Due to the rain, the grass grew 
in. last week.
A. 
B. - 
C. 
D. - 
Solve the problem.What monthly contribution should you make if your goal is to have $600,000 in your retirement savings account after 45 years? Assume the APR is 6.6% compounded monthly and that contributions are made at the end of each month, including the last month. Round your answer to the nearest cent.
A. $167.94 B. $192.96 C. $185.84 D. $170.68 E. $179.99
A cannon fires a cannonball as shown in the figure. The path of the cannonball is a parabola with vertex at the highest point of the path. If the cannonball lands 800 ft from the cannon and the highest point it reaches is 1600 ft above the ground, find an equation for the path of the cannonball. Place the origin at the location of the cannon.
 figure 1.png)