Solve the problem. Round your answer to the nearest tenth, if necessary.By switching service providers, a family's telephone bill decreased from 
a month to $42. What was the percent of decrease?
A. 16%
B. 19%
C. 17%
D.
| 8% |
Answer: A
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Give the value of the function in radians.cos-1 -0.4079
A. 1.991 B. 4.292 C. -0.420 D. 5.133
Solve the problem.The temperature (in degrees Fahrenheit) of a dead body that has been cooling in a room set at 70° is measured as 88°. One hour later, the body temperature is 87.5°. How long (to the nearest hour) before the first measurement was the time of death, assuming that the body temperature of the deceased at the time of death was 98.6°. Assume the cooling follows Newton's Law of Cooling: U = T + (Uo - T)ekt.
What will be an ideal response?
Find a decimal approximation for the fraction or mixed number, rounded to the given place.
; Round to the nearest tenth.
A. 0.3 B. 1.29 C. 1.3 D. 0.8
Simplify using the product rule of exponents.(-0.2x6)(0.4x7)
A. 0.08x42 B. -0.08x42 C. -0.08x13 D. 0.08x13