Solve the problem.A collection of dimes is arranged in a triangular array, with 12 coins in the base row, 11 in the next, 10 in the next, and so forth. Find the value of the collection.
A. $15.60
B. $0.78
C. $7.80
D. $3.90
Answer: C
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Express the rational number as a terminating or repeating decimal number.
A. 0.
B. 0.
C. 0.
D. 0.7
If a rock is tossed upward from ground level, its upward velocity V, in feet per second, satisfies the equation of change
.
Here the time t is measured in seconds. Suppose the rock is tossed upward with an initial velocity of 136 feet per second.
?
A: Write a formula that gives the velocity t seconds after the upward toss.B: How many seconds after the toss does the rock reach the peak of its flight? Suggestion: What is the velocity of the rock when it reaches the peak of its flight? Round your answer to two decimal places.C: How many seconds after the rock is tossed upward does it strike the ground? Round your answer to two decimal places.
What will be an ideal response?
Use Euler's formula to answer the question.A polyhedra has 15 vertices and 32 edges. How many faces does it have?
A. 13 B. 47 C. 15 D. 19
Find an equation of the line containing the given points. Express your answer in slope-intercept form. 
and 
A. y = 7x - 
B. y = 7x - 
C. y = 
x + 
D. y = 
x + 