Solve the equation and check your solution.
+ 7 = 
A. - 
B. - 
C. 
D. 
Answer: B
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Use a finite approximation to estimate the area under the graph of the given function on the stated interval as instructed.f(x) = x2 between x = 1 and x = 5 using a right sum with four rectangles of equal width.
A. 69 B. 54 C. 41 D. 30
Solve the problem.In the formula A(t) = A0ekt, A is the amount of radioactive material remaining from an initial amount A0 at a given time t, and k is a negative constant determined by the nature of the material. An artifact is discovered at a certain site. If it has 59% of the carbon-14 it originally contained, what is the approximate age of the artifact? Carbon-14 decays at the rate of 0.0125% annually. Round to the nearest year, if necessary.
A. 4720 years B. 1833 years C. 3280 years D. 4221 years
Solve the problem.In the following formula, y is the minimum number of hours of studying required to attain a test score of x: 
How many hours of study are needed to score 94?
A. 100.04 hr B. 14.53 hr C. 62.20 hr D. 6.22 hr
Solve the problem by solving a system of equations graphically.One number is double another number. Their difference is 6. Find the numbers.
A. 2, 1 B. 6, 3 C. 24, 12 D. 12, 6