Functions
What is the rate of change in the following function:
y = 12 - 3/4x
-3/4
Solve for x
8.2x − 46.8 + 11.2x = 14.1x − 15
x = 6
How many letters are in the alphabet?
Eleven letters are in “the alphabet”.
Combine like terms: –8(5 – 3x) + 12
-40+24x+12
-28+24x
Which ordered pair makes the equation true?
y= 2x + 5
a.(-2,1)
b.(-3,11)
c.(1,6)
d. (2,7)
A
After it leaves the factory, a new car is driven an estimated 15,000 miles per year.
. According to the function, is the total number of miles driven increasing or decreasing each year? Explain.
The total number of miles is increasing each year by 15,000 miles per year
If an electric train is moving north at 55 mph and the winds blowing east at 70 mph, which way does the smoke blow?
An electric train doesn’t emit smoke.
Evaluate 30 – xy + 2 if x = 7 and y = 3
30-(7)(3) + 2
30-21+2
11
The equation y = 123x represents the function for the number of toys y produced in x minutes at company A.
How many toys are made in 4 minutes?
492 toys
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If a plane came crashing down on the border between Canada and America, where are the survivors buried?
You don’t bury the survivors.
Solve using PEMDAS
(28 – 102 ) ÷ 23
-72/8
-9
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Dream spent $78 shopping on SHEIN. She bought 2 shirts that each cost $17.50 and a pair of shoes. How much did the pair of shoes cost?
$43
The person who makes it and the person who buys it have no use for it and the person who uses it never sees it or feels it. What is it?
Coffin
Write an equation for the problem. Do not solve.
The electric company charges $0.06 per kilowatt hour of electricity used plus a monthly fee of $45. Write a multiplication equation to find the number of kilowatt hours of electricity for which the Estevez family was charged if their electric bill was $45.84.
0.06x+45 =45.84
Two cars are traveling at different speeds:
CAR 1: Car 1 is moving at a speed that is represented by y=1.5x where y equals the distance and x equals the number of miles traveled
CAR 2:Car 1 is moving at a speed that is represented by y=1.2x where y equals the distance and x equals the number of miles traveled
Which car is traveling at a greater speed? Explain.
Car 1 because it has a greater rate of change
A car-rental agency charges $38 per day plus $0.21 for each mile driven. Sandra paid $88.40 for renting a car from them for one day. Which of the following could be used to find the number of miles she drove that day?
A 0.21x = 88.4
B 38x + 0.21 = 88.4
C 0.21x + 38 = 88.4
D 38x + 0.21(88.4)
C
A man is looking at a photo of a man on the wall and states, “Brothers and sisters I have none, but this man’s father is my father’s son.” How are the men related?
The man in the picture is his son.
Solve the following inequality:
2x + 4 > -8
x<-6