Expressions
|a − 3| when a = 8
5
−9(x + 4)
−9x − 36
Estimate to the nearest dollar.
$6.46 + $4.21 − $2.65
$7
a number increased by 5
n+ 5
187.34 × 10^3
187,340
5(7b)
35b
(2r + 8) / (s - 2) when r = 11 and s = 7
6
4n(x − 2n)
4nx − 8n^2
517(28)
15,000
the difference of 7 and a number
7 − n
6.4 × 10^8
640,000,000
(a − 34) − 28
a − 62
6r − 2s when r = −7 and s = −4
-34
−3(x − y + 2)
−3x + 3y − 6
Estimate
78 · 942
72,000
4 more than the opposite of 6
−6 + 4
0.00000321
3.21 × 10^−6
2x − 8 + 5x
7x − 8
|− 28 / k| when k = 7
4
−2x(3y − 8 + 4z)
−6xy + 16x − 8xz
Estimate
9859/192
50
3 times the sum of x and 5
3(x + 5)
3.1 × 10^−2
.031
2(3w − 4x) − 2w + 3 − 4x
4w − 12x + 3
−xy2 + 3x − 2y + 6
How many terms in this expression? __
What is the coefficient of the third term? __
What is the constant term? __
_4_
_-3_
_6_
5x(12) − 5x(y)
5x(12 − y)
Jonathan bought a new car for $19,875. He later sold the car for $9,495. Esti-mate the difference in the prices to the nearest hundred dollars.
$10,400
33 decreased by the quotient of x and 7
33 − x/7
0.0084
8.4 × 10^−3
4a(a + b) + 2(a − 6b) + 7a
4a^2 + 9a + 4ab − 12b