Solve the equation by making an appropriate substitution.(x - 5)2 + 9(x - 5) + 20 = 0
A. {9, 10}
B. {-10, -9}
C. {0, 1}
D. {-1, 0}
Answer: C
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Solve the problem.Hooke's law is applicable to idealized (linear) springs that are not stretched or compressed too far. Consider a nonlinear spring whose restoring force is given by F(x) = 15x - 0.3x3, for |x| ? 8. How much work is done in compressing the spring from its equilibrium position (x = 0) to x = -1.5? Round to two decimal places when appropriate.
A. 16.5 J B. 32.23 J C. 345.6 J D. 172.8 J
Solve the problem. A foreign exchange student decided to purchase an international calling plan. The monthly cost of the plan is $19.99 plus $0.08 per minute. This can be modeled by the equation 
where C is the monthly cost and m is the number of minutes used each month. Graph this equation, assuming the student will not use more than 400 minutes in a month.Monthly Cost of Cell Phone Use
A.
| Monthly Cost of Cell Phone Use |
B.
| Monthly Cost of Cell Phone Use |
C.
| Monthly Cost of Cell Phone Use |
D.
| Monthly Cost of Cell Phone Use |
Determine whether the relation is a function.
A. Not a function B. Function
Loretta deposits $350 every quarter into a savings account that earns 4.5% interest compounded quarterly. What is the balance after 7 years?
A. $10,312.63 B. $11,344.18 C. $11,444.27 D. $12,477.74