Solve.The temperature at 1 p.m. on January 8 was -20° Fahrenheit. By 11 p.m. the temperature had risen 26 degrees. Find the temperature at 11 p.m.
A. 6°F
B. -46°F
C. 46°F
D. -6°F
Answer: A
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Estimate by rounding as indicated.There are 27,878,400 square feet in one square mile. How many square feet are there in 33 square miles? Estimate by rounding the number of square feet in one square mile to the nearest ten million and the number of square miles to the nearest ten. Also find the exact answer.
A. Estimate: 900,000,000 sq ft; exact: 919,974,000 sq ft B. Estimate: 840,000,000 sq ft; exact: 919,974,000 sq ft C. Estimate: 900,000,000 sq ft; exact: 919,987,200 sq ft D. Estimate: 840,000,000 sq ft; exact: 919,987,200 sq ft
Provide an appropriate response.When writing an equation, unknown quantities are represented by:
A. letters B. numbers C. symbols D. parentheses
Use the change-of-base formula and a calculator to evaluate each logarithm.log2.8 284
A. 2.4533 B. 5.4865 C. 101.4286 D. 0.1823
Provide an appropriate response.When is it advantageous to use implicit differentiation to find an expression for dy/dx?
A. When the relationship between x and y can be expressed in the implicit form y = f(x), and it is difficult to express it any other way. B. When the relationship between x and y can be expressed in the explicit form y = f(x), and it is difficult to express it any other way. C. When the relationship between x and y is not given in the implicit form f(x,y) = 0, and it is difficult to put the equation in this form. D. When the relationship between x and y is not given in the explicit form y = f(x), and it is difficult to put the equation in this form.