Evaluate the expression for the given value or values of the variables.9x2 + 7y; x = 6, y = 5
A. 1935
B. 359
C. 267
D. 2951
Answer: B
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Use the appropriate rounding rule to answer the question with the correct precision or correct number of significant digits.If you buy 207 items which weigh 0.025 lb each, what is the total weight of your purchase?
A. 5.175 lb B. 5.18 lb C. 5.2 lb D. 5 lb
Write an equation to describe the variation. Use k for the constant of proportionality.w varies jointly as x and y.
A. w + x + y = k B. w = k + x + y C. w = kxy D. wxy = k
Use synthetic division to find the quotient and the remainder.x2 + 9x + 18 is divided by x + 4
A. x + 5; remainder 0 B. x + 6; remainder 0 C. x + 5; remainder 2 D. x + 5; remainder -2
Solve the equation. Express irrational answers in exact form and as a decimal rounded to 3 decimal places.
x = 81 - x
A. 
? 0.790
B. 
? 0.593
C. 
? 1.688
D. ln 
- ln 8 ? -2.927