Solve.When making a telephone call using a calling card, a call lasting 6 minutes cost $2.90. A call lasting 16 minutes cost $6.90. Let y be the cost of making a call lasting x minutes using a calling card. Write a linear equation that relates the cost of a making a call, y, to the time x.
A. y = 0.4x - 9.1
B. y = -0.4x + 5.3
C. y = 
x - 
D. y = 0.4x + 0.5
Answer: D
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Provide an appropriate response.The only real number that does not have a reciprocal is .
Fill in the blank(s) with the appropriate word(s).
Solve the problem.A car rental agency charges $250 per week plus $0.10 per mile to rent a car. The total cost, C, for the renting the car for one week and driving it x miles can be modeled by the formula 
. How many miles can you travel in one week for $310?
A. 3100 miles B. 281 miles C. 600 miles D. 575 miles
? is a central angle that cuts off an arc of length s. Find the radius of the circle if ? = 3°, 
m .
?
If the answer needs rounding, round it to three significant digits.
?
r = __________ m
Fill in the blank(s) with the appropriate word(s).
Solve the problem, rounding the answer as appropriate. Assume that "pure dominant" describes one who has two dominant genes for a given trait; "pure recessive" describes one who has two recessive genes for a given trait; and "hybrid" describes one who has one of each.Two hybrids produce a litter of four offspring. What is the probability that exactly one is pure recessive?
A. 0.133 B. 0.25 C. 0.211 D. 0.422