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Solve Proportion

V = 16

A tower casts a 450 ft shadow at the same time that a 4 ft child casts a 6 ft shadow. Write and solve a proportion to find the height of the tower.

4/x=6/450; 300ft

Four ounces of orange juice contains 50 calories. Fourteen ounces contains c calories. Write a proportion for the situation. Then solve.

14/c = 4/50 ; 175 calories

The ratio of hydrogen atoms to oxygen atoms in water is 2:1. If an amount of water contains 341 trillion atoms of oxygen, how many hydrogen atoms are there ?

682 trillion

The scale of a map is 2cm: 15km. Find the actual distance between two cities if they are 6 cm apart on the map.

45cm

Which is the better buy? (Show each Unit Rate) oz of Fruit Loops - $ 2.95 or oz of Fruit Loops - $ 5.99

Either – Both are $0.24

In the ninth grade there are 320 students and 20 teachers. What is the student-to-teacher ratio?

X = 8 or -8

Give all solutions for x. 37 = 4| x | - 11

X = 12 or -12

Give all solutions for x. 13 = | 6x - 5 |

X = 3 or –4/3

Give all solutions for x. | x | + 12 = 5 | x | - 4

X = 4 or -4

Solve for h. A = bh

h = A/b

Solve for m. G =3rm

m = G 3r

Solve for y. 3x – 4y = Z

Y = z – 3z -4

Solve for B A = ½(B+b)h

B = 2A -b h

Solve for a. B = 1/3a - C

A =3(b + c) Or A = 3b + 3c

Give the following as an algebraic expression: "3 less than the product of 5 and a number"

5n - 3

Give the following as an algebraic expression: “12 more than half a number"

1/2n + 12

Simplify: 5x – 3 + 4x + 8 – 2x

7x + 5

Name the Property: If a = b and b = c, then a = c.

Transitive Property

Simplify: [2(4x + 7) – 3] + [5(3 + x) + 2x]

Simplify: 15x + 26

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