Write the equation of the line with the given slope, m, and y-intercept, (0, b).m = 
; b = -1
A. y = - 
x - 1
B. y = - 
x + 1
C. y = 
x - 1
D. y = 
x + 1
Answer: C
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You sell heating oil. Your yearly storage cost C, in dollars, depends on the amount q, in thousands of gallons, of heating oil you order at the beginning of the season. The relationship is
?
.
?
There are two heating oil order sizes that will result in a yearly storage cost of 142 dollars. Find both of them. Round the number of thousand gallons to two decimal places if necessary.
?
A. 2.01 thousand gallons and 8.14 thousand gallons B. 0.36 thousand gallons and 7.56 thousand gallons C. 35.12 thousand gallons and 0.38 thousand gallons D. 37.91 thousand gallons and 37.99 thousand gallons
Find the sum, if it exists.
A. 69 B. -2460 C. -732 D. Does not exist
Use the order of operations to simplify the expression.7 ? 32 - 
A. 8
B. 62
C. 20
D. 63
Solve the problem.In the formula N = Iekt, N is the number of items in terms of an initial population I at a given time t and k is a growth constant equal to the percent of growth per unit time. How long will it take for the population of a certain country to double if its annual growth rate is 6%? Round to the nearest year.
A. 5 yr B. 1 yr C. 12 yr D. 33 yr