DRAW A REPRESENTS IT AND TO THE SOLUTION. NOT ALL CHOICES WILL BE USED.
7.5x + 75 < 300
X330
Remy is catering food for a party.
The catering company charges $75
plus $7.50 per guest. If Remy wants
to spend under $300 for food, how
many guests can she invite?
300 -7.5x275
x 230
Joshua has $300 in a checking account
and he withdraws $7.50 per week. How
many weeks can Joshua continue to
withdraw money and still have a minimum
of $75 in his account?
7.5x + 75 300
x < 30
APPLYING INEQUALITIES
300 -7.5x 375
x > 30
3 Gordon is selling popcorn that costs
$7.50 per bag as a fundraiser. He has
already sold $75 worth of popcorn, and
if he sells over $300 worth, he will win a
prize. How many more bags does Gordon
need to sell to win a prize?
7.5x + 75 > 300
x 30
Maneuvering the Middle LLC, 2019

Airplane speeds are measured in three different ways: (1) indicated speed, (2) true speed, and (3) ground speed. the indicated airspeed is the airspeed given by an instrument called an airspeed indicator. a plane’s indicated airspeed is different from its true airspeed because the indicator is affected by temperature changes and different altitudes of air pressure. the true airspeed is the speed of the airplane relative to the wind. ground speed is the speed of the airplane relative to the ground. for example, a plane flying at a true airspeed of 150 knots into a headwind of 25 knots will have a ground speed of 125 knots. the problems below refer to static and dynamic pressure. static pressure is used when a body is in motion or at rest at a constant speed and direction. dynamic pressure is used when a body in motion changes speed or direction or both. a gauge compares these pressures, giving pilots an indicated airspeed. in problem #s 1 and 2, use the following information. the indicated airspeed s (in knots) of an airplane is given by an airspeed indicator that measures the difference p (in inches of mercury) between the static and dynamic pressures. the relationship between s and p can be modeled by s=136.4p√+4.5. 1. find the differential pressure when the indicated airspeed is 157 knots. 2. find the change in the differential pressure of an airplane that was traveling at 218 knots and slowed down to195 knots. in problem #s 3 and 4, use the following information. the true airspeed t (in knots) of an airplane can be modeled by t=(1+a50,000) ⋅ s, where a is the altitude (in feet) and s is the indicated airspeed (in knots). 3. write the equation for true airspeed t in terms of altitude and differential pressure p. 4. a plane is flying with a true airspeed of 280 knots at an altitude of 20,000 feet. estimate the differential pressure. explain why you think your estimate is correct.

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.