If the temperature outside is 86°F, the heat index can be found using the equation y = 0.004x2 − 0.1243x + 84.028. This equation is also the curve of best fit for the values in the table. In the equation, x represents the relative humidity and y represents the heat index. Relative Humidity Heat Index
40% 85°F
55% 89°F
75% 97°F
90% 105°F
100% 112°F

Using the curve of best fit, if the current temperature is 86°F and the relative humidity is 55%, what is the heat index? Round the answer to the nearest degree.

A.
78°F
B.
88°F
C.
89°F
D.
90°F

The polynomial 10x3 + 35x2 - 4x - 14 is factored by grouping. 10x3 + 35x2 - 4x - 14 5x )-20 what is the common factor that is missing from both sets of parentheses?

Which statement is true about a number and its additive inverse? a. their product is always one. b. their sum is always one. c. they are always reciprocals of each other. d. their sum is always zero.

He graph of f(x) = |x| is stretched by a factor of 0.3 and translated down 4 units. which statement about the domain and range of each function is correct? the range of the transformed function and the parent function are both all real numbers greater than or equal to 4. the domain of the transformed function is all real numbers and is, therefore, different from that of the parent function. the range of the transformed function is all real numbers greater than or equal to 0 and is, therefore, different from that of the parent function. the domain of the transformed function and the parent function are both all real numbers.