Evaluate the Expression
4x + 9 when x = 7
37
5(y-7) when y =10
15
Six times a number n, increased by 9
6n + 9
Movie tickets cost $8 each plus $5 for a bucket of popcorn. 4 friends go see a movie and they each buy a bucket of popcorn. Write and evaluate an expression to figure out how much they spent.
8t + 5s ; $52
a number x is doubled and then decreased by 8. Write and evaluate when x = 9
2x - 8 ; 10
30 - 3y when y = 8
6
4 (x-3) + 2 when x = 5
10
The difference of 20 and twice a number x
20 - 2x
a gym charges $15 to join plus $9 per month. Write and evaluate an expression to determine how much a gym membership would cost for 12 months.
15 + 9m ; $123
a school collects x dollars from each of 6 classes and then donates $30. Write and evaluate when x = 25
6x + 30 ; $180
6a + 5b when a = 4 and b = 7
59
3(a + 4) + 2b when a = 6 and b = 5
40
Three more than the product of 5 and a number m
3 + 5m
A video game character earns 50 coins per level and starts with 120 coins. Write and Evaluate an expression to determine how many coins they have after 9 levels.
120 + 50n ; $570
a phone plan costs $25 per month and charges an additional $10 fee one time. Write and evaluate for m = 5
25 m + 10 ; $135
48 / 3m when m = 4
4
24 / 2p + q when p = 3 and q = 4
8
Half of a number d, plus 10
1/2 d + 10
Each notebook costs $2.50. You buy n notebooks and use a $4 coupon. Write and evaluate an expression to determine how much it'll cost to buy 86 notebooks for the grade.
2.50n - 4 ; $211
a rectangle has a length of (x + 4) and a width of 3. Write an expression for the perimeter and evaluate when x = 5.
2(x + 4) + 2(3) ; 24 units
3(n + 8) -11 when n = 9
40
2(3k + 4) + m when k = 5 and m = 6
44
The sum of a number p and 4, multiplied by 3
3(p + 4)
A babysitter charges $12 per hour plus a fee of $6 for every day she babysits. Write and evaluate an expression to determine how much she will make if she babysits for 3 hours every day after school.
12h + 6d ; $210
a math club sells shirts for $15 each and spends $120 on supplies. Write an expression for the profit and evaluate when s = 14.
15s - 120 ; $90 profit