Combining Like Terms
Jenny has a job that pays her $8 per hour plus tips (t). Jenny worked for 4 hours on Monday and made $65 in all. What equation could be used to find t, the amount Jenny made in tips?
65 = (8*4)+t
When is the Algebra Keystone?
Thursday, May 18th, and Friday, May 19th
Nolan has $15.00. He earns $6.00 an hour babysitting. The equation below can be used to determine how much money in dollars (m) Nolan has after any number of hours of babysitting (h).
m = 6h + 15
After how many hours of babysitting will Nolan have $51.00?
6 hours
What is the order of operations?
PEMDAS
Parentheses, Exponent, Multiply & Divide, Add & Subtract.
Tim’s scores the first 5 times he played a video game are listed below.
4,526 4,599 4,672 4,745 4,818
Tim’s scores follow a pattern. Which expression can be used to determine his score after he played the video game n times?
A. 73n + 4,453
B. 73(n + 4,453)
C. 4,453n + 73
D. 4,526n
A. 73n + 4,453
What is a variable?
A letter that represents a number.
A pizza restaurant charges for each pizza and adds a delivery fee. The cost (c), in dollars, to have any number of pizzas (p) delivered to a home is described by the function c = 8p + 3. What is the cost per pizza?
$8
What is the difference between an equation and an expression?
An equation has an equal sign.
A juice machine dispenses the same amount of juice into a cup each time the machine is used. The equation below describes the relationship between the number of cups (x) into which juice is dispensed and the gallons of juice (y) remaining in the machine.
x + 12y = 180
How many gallons of juice are in the machine when it is full?
B. 15
If you don't know the answer to a question on the keystone what should you do?
Either eliminate the obvious wrong answers or pick same letter for every unknown answer