MMA Midterm 23-24

The distance, d, varies directly with the time, t. If you have driven 150 miles for 4 hours, then how long would you drive for 225 miles?

• 3 hours

• 4 hours

• 5 hours

• 6 hours

Tags

CCSS.HSF-LE.A.1B

If y varies inversely as x and y = 40 when x = 3, find y when x = 12.

• 10

• 11

• 12

• 13

According to Hooke's Law the amount that a spring is stretched, s, varies directly with the force (or weight), F, attached to the spring. If a spring stretches 2.5 inches when 85 pounds is attaches, then how far will it stretch when 50 pounds is attached?

• 1.47

• 4.25

• 14.71

• 42.5

What net force is required to accelerate a car at a rate of 2.5 m/s2 if the car has a mass of 2500 kg. (F=ma)

• 100 Newtons

• 1000 Newtons

• 6250 Newtons

• 62500 Newtons

What is the acceleration of a softball if it has a mass of .45 kg and hits the catcher's glove with a force of 30N? (F=ma)

• .67 m/s2

• 13.5 m/s2

• 66.67 m/s2

• 1350 m/s2

Ohm's law states the current through a conductor (in amperes), I, is directly proportional to the potential difference across the two points, V (measured in Volts). R is the resistance of the conductor and is measured in Ohms. Ohm's law is summed up in the formula V = IR. How much voltage does a conductor have if the resistance is 12 ohms and the current is 18 amps?

• 0.67 Volts

• 30 Volts

• 216 Volts

• 1.5 Volts

Tags

CCSS.6.EE.B.7

Boyle's Law states the pressure and volume are inversely proportional for a gas kept at a fixed temperature. A sample of carbon dioxide occupies a volume of 4.25 liters and 120 kPa pressure. What pressure would the gas exert if the volume was decreased to 3.0 liters?

• .85 kPa

• 84.71 kPa

• 170 kPa

• 17,000 kPa

Several students performed an experiment by dropping marbles which are uniform in size into a jar of water. They measured the height of the water after every five marbles. The results are listed in the table below. Which linear equation in two variables best represents data in the table?

• y = 0.5x+5

• y = 5x + 5

• y = 0.1x +5

• y = 10x + 5

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Mindy is working on her math homework. One problem presents her with the following data table and asks her to write a function rule which can describe the data. Which of the following function rules should Mindy use to describe the data set?

• f(x)= 1/4(40)^x

• f(x)= 40(x)^1/4

• f(x)= 40(1/4)^x

• f(x)= 1/4(x)^40

Tags

CCSS.HSF.LE.A.2

The table below shows the life expectancy of women since 1975. Predict the year a woman must be born if she expects to live to be 95 years of age if the regression model for women is W = 0.13t - 172.68.

• 2060

• 2095

• 2110

• 2145