Algebra basics

Question 1

Add an expression for the following: 7 less than 4a

Accepted Answer

4a - 7

Question 2

Evaluate the following if a = 3, b = -2 and c = -4

Accepted Answer

60

Question 3

Use the distributive law to expand and simplify: 3(x + 2)

Accepted Answer

3x + 6

Question 4

Find the area of this shape in expanded form:

Accepted Answer

x (2x - 1)

Question 5

Simplify by collecting like terms: 4x + 7x

Accepted Answer

11x

Question 6

Use the distributive law to expand and FULLY simplify: 7(x - 3) - 3(x - 4)

Accepted Answer

4x - 9

Question 7

Consider the expression 5x - 2xy - y2 - 7. What is the coefficient of x?

Accepted Answer

5

Question 8

simplify by collecting like terms: ab + ba

Accepted Answer

2ab

Question 9

Write an expression for the following: the number of tickets purchased for x adults and y children

Accepted Answer

x + y

Question 10

Simplify the following: 2a x 3b

Accepted Answer

6ab

Question 11

For this shape, write an expression for perimeter AND area

Accepted Answer

2a + 2b, ab

Question 12

Evaluate the following if a = 3, b = -2 and c = -4

Accepted Answer

9

Question 13

Simplify by collecting like terms: a2b - 5a2b - 3

Accepted Answer

-4a2b - 3

Question 14

This is wrong. What should the correct answer be?

Accepted Answer

a\div2

Question 15

Fully simplify the following: 100x^2y\div\left(25xy\right)

Accepted Answer

4x

Questions 15