Solve the problem.The following information pertains to a bakery which makes donuts.
Make a scatterplot of the data. Based upon the scatterplot, what type offunction would best model the data?
A. Constant function
B. Quadratic function
C. Linear function
D. All of the above
Answer: B
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Solve for x.
= 
A. 240 B. 30 C. 120 D. 15
Solve.8x + 10x = 126
A. 108
B. 
C. 7
D. 
Solve.When making a telephone call using a calling card, a call lasting 6 minutes cost $1.70. A call lasting 13 minutes cost $3.10. Let y be the cost of making a call lasting x minutes using a calling card. Write a linear equation that models the cost of making a call lasting x minutes.
A. y = -0.2x + 2.9
B. y = 0.2x - 9.9
C. y = 0.2x + 0.5
D. y = 5x - 
There is exactly $10,000 in a trust fund that is to be invested among three types of bonds, A, B, and C, which yield 5%, 6%, and 7%, respectively, on the investment. The total yield must be at least $600, no less than $3000 may be invested in B bonds, and no more than $2000 may be invested in A bonds.If x and y represent the amounts invested in A and B bonds, which of the following inequalities must be satisfied?
A. 0.05x + 0.06y ? 600 B. 2x + y ? 1000 C. y ? 3000 D. x + y ? 5000 E. none of these