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Write an algebraic expression to model the following problem: Jenny charges 3 per bracelet plus 7 dollars for shipping.
3b + 7 or 7 + 3b
Simplify the following expression: v + v + 5 - 2 + 3v
5v + 3
Evaluate the following expression if x=2:
3x - 16
3 • 2 -16
6-16
-10
Write the expressions in standard form.
Are the following expressions equivalent? Make n = 2.
2+7n and 3n+2+4n
16 and 16
Yes
81 x 9 = 801. What must you do to make this equation true?
Flip it upside down. 108 = 6 x 18
Jim is j years old. Alex is 4 years younger than Jim. Using the variable j, describe Alex's age.
j-4
Simplify the following expression: 4k + 3j + 6 + k + 8j
5k+11j+6
Evaluate the following expression if z=12:
4 + – 5z
4 + – 5 • 12
4 – 60
– 56
Write the expressions in standard form.
Are the following expressions equivalent? Make x = 7
2x+5 and x+8+x-3
19 and 19
Yes
If you go to the movies and you’re paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?
It’s cheaper to take two friends at the same time. In this case, you would only be buying three tickets, whereas if you take the same friend twice you are buying four tickets.
Write an algebraic expression to model the following situation: Bill has 150 dollars saved up. He charges 8 dollars per car wash.
Simplify the following expression: 4(d-3f)+14f
4d+2f
Evaluate the following expression if r=18:
16 - (2/3)r - 4
16-(2/3)(18)-4
16-12-4
4-4
0
Write the expressions in standard form.
Are the following expressions equivalent? Make w = – 2.
3w-5 and 2+4w+3-2w
– 11 and 1
No
How can you make the following equation true by drawing only one straight line: 5+5+5=550?
Draw a line on the first plus sign that turns it into a 4! The equation then becomes true: 545+5=550.
You could also change the equal symbol to a crossed-out equal symbol which means “not equal to.”
Write an algebraic expression to model the following situation: 6 less than the product of 8 and k
8k - 6
Simplify the following expression: 3 + 8p + 3r - 4p + 6p + 1 - r
10p+2r+4
Evaluate the following expression if x=3:
(11+x)/2-(9x-3)/4
(11+(3))/2-(9(3)-3)/4
(14/2)-(27-3)/4
7-(24/4)
7-6
1
Write the expressions in standard form.
Are the following expressions equivalent? Make y = 10.
(12y/3) and 3y
40 and 30
No
When I take five and add six, I get eleven, but when I take six and add seven, I get one. When is it possible?
In a clock
Write an algebraic expression to model the following situation: The product of 3 and x subtracted by the quotient of y and 2.
3x - y/2
Simplify the following expression: 17 + 15x - 10 - 12x
3x+7
Evaluate the following expression if y=7:
The sum of (21/y) and (4y/2)
(21/(7))+(4(7)/2)
3+(28/2)
3+14
17
Write the expressions in standard form.
Are the following expressions equivalent? Make s = – 5
(60s/5) and s+14s-3s
– 60 and – 60
Yes
Three times what number is no larger than two times that same number?
ZERO