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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
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
Jim is j years old. Alex is 4 years younger than Jim. Using the variable j, describe Alex's age.
j-4
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
Write an algebraic expression to model the following situation: Bill has 150 dollars saved up. He charges 8 dollars per car wash.
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
Write an algebraic expression to model the following situation: 6 less than the product of 8 and k
8k - 6
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
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
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