Solve by the substitution method.x + 6y = 44x + 7y = 16
A. (4, 0)
B. (4, 16)
C. (0, 4)
D. (-4, -1)
Answer: A
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Solve the problem.The formula S = A
models the value of a retirement account, where 
number of dollars added to the retirement account each year, 
annual interest rate, and 
value of the retirement account after t years. If the interest rate is 7%, how much will the account be worth after 15 years if $800 is added each year? Round to
the nearest whole number. A. $2347 B. $35,316 C. $22,310 D. $12,800
Find the distance d(P1, P2) between the points P1 and P2.P1 = (4, -7); P2 = (2, -1)
A. 32
B. 32
C. 2
D. 8
Evaluate the expression using exponential rules. Write the result in standard notation.(6 × 105) × (5 × 102)
A. 30,000,000 B. 30,000,000,000 C. 3,000,000,000 D. 300,000,000
Solve the problem.What is the range of the tangent function?
A. all real numbers, except odd multiples of 
(90)°
B. all real numbers from -1 to 1, inclusive
C. all real numbers
D. all real numbers greater than or equal to 1 or less than or equal to -1