Simplify
9 - (3 + 1)2
-7
6 less than twice a number
2n - 6
When rolling a number cube, what is the probability of rolling an odd number?
1/2
The perimeter of a square varies directly with the length of a side of the square. What is the perimeter of a square with a side length of 13.4 in?
P=4s ; 53.6 in.
w + 4 ≤ 9
w ≤ 5
2 + 6 • 8 ÷ 4
14
3 times the quantity m minus 7
3(m - 7)
Say you are drawing from a standard 52 card deck. What is the probability of drawing a red 7?
1/26
After 30 minutes a car moving at a constant speed has traveled 25 miles. Moving at the same speed, how far will it travel in 140 minutes? (Hint d=rt)
About 117 miles
-6 > n - 1/5
n < -5.8
6 + 8 ÷ 2 - 3
7
-4 times the quantity 4 plus w
-4(4 + w)
You are holding a bag with 4 blue marbles and 6 red marbles. What is the probability that you will randomly pull one red and one blue marble?
4/15
The length of a rectangle varies inversely with the width of the same rectangle. Two rectangular fields have the same area. One measures 75 yd by 60 yd. If the other has a length of 72 yd, what is its width?
62.5 yrd
5 ≤ v - 4 - 7
v ≥ 16
10 ÷ 5 • 2 + 6
10
4 times the sum of 3 and a number
4(3 + n)
Suppose you choose a tile at random from a bag conatining 2 As, 3 Bs, and 4 Cs. You REPLACE the first tile in the bag and choose again. What is the probability of drawing A and then B?
2/27
Kevin is training to run in a half-marathon. Initially, he could run 6 miles per hour for 2 hours. Two months later he ran the same distance in 1 hour and 45 minutes. What is his new speed?
About 6.9 mi/h
5 - 2n ≤ 3 - n
n ≥ 2
5 + 4 • (8 - 6)2
21
2 times the quantity 3 times c plus 9
2(3c + 9)
Four girls and three boys volunteer to represent their class at a school assembly. The teacher selects one name and then another from a bag containing the seven students' names. What is the probability that both representatives will be girls?
2/7
The number of people working varies inversely with the number of days worked. Suppose 4 people can paint a house if they work 3 days each. How long will it take a crew of 5 people to paint the house?
2.4 days
3(2 + r) ≥ 15 - 2r
r ≥ 1.8