where d is the day of the year, and 1=January 1. On days when the temperature is approximately 32C or above, the air conditioners at city hall are turned on. During what days of the year are the air conditioners running at city hall?

where d is the day of the year, and 1=January 1. On days when the temperature is approximately 32C or above, the air conditioners at city hall are turned on. During what days of the year are the air conditioners running at city hall?

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter1: Equations, Inequalities, And Mathematical Modeling

Section1.1: Graphs Of Equations

Problem 9ECP

See similar textbooks

Similar questions

Find the intensity of light at a depth of 12 meter if I0=14 and k=0.7. Round to two decimals.
The half-life of plutonium-244 is 80,000,000 years. Find function gives the amount of carbon-14 remaining as a function of time, measured in years.
If a coffee filter is dropped, its velocity after t seconds is given by v(t)=4(10.0003t) feet per second. What is the terminal velocity, and how long does it take the filter to reach 99 of terminal velocity? Use a table increment of 0.1 and given your answer to the nearest tenth of a second.
The resistance of a copper wire carrying an electrical current is directly proportional to its length and inversely proportional to its cross-sectional area. A copper wire with a diameter of 0.0126inch has a resistance of 64.9ohms per thousand feet. What length of 0.0201-inch-diameter copper wire will produce a resistance of 33.5ohms?
The kinetic energy E of an object varies jointly with the object’s mass m and the square of the object’s velocity v . An object with a mass of 50 kilograms traveling at 16 meters per second has a kinetic energy of 6400 joules. What is the kinetic energy of an object with a mass of 70 kilograms traveling at 20 meters per second?
What is the decibel level of one of the new quiet dishwashers with intensity 107 watts per square inch?
Use cofunctions of complementary angles to find θ where cos(17deg) = sin(θ). Use logarithm properties to condense: ln4 + 3 ln x+ 3 ln (x2 + 4) −ln(x2 + 4)x3 as muchas possible. Use logarithm properties to condense −3 log(x2 + 25) + 7 log(x −5) −6 log(x2 −25) asmuch as possible
evaluate
1. Consider the following functions: y = log2x and y = 2.3* Sketch each on the same grid. For each function: a) b) i) state the intercepts. ii) state the domain and range. How are these functions related?
The equation that models the amount of time, t, in minutes that a cup of hot chocolate has been cooling as a function of its temperature, T, in degrees Celsius is t = log (¹ 7522) ÷ log (0.75). Calculate the following. a) the cooling time if the temperature is 35 °C b) the initial temperature of the drink
Find the maximum area of a rectangle in the first quadrant with one corner at the origin, an opposite corner on the graph of y = -ln x, and two sides on the coordinate axes.
A culture of bacteria is known to grow at a rate proportional to the present amount. After one hour 100 bacteria are observed in the culture, and 3,000 after four hours. Find the expression for the number of bacteria present in the culture at any time t