Combine like terms. -5x - 3x +7x question 5 options: 15x -x x 9x 6 (1 point) question 6 unsaved combine like terms. x + x + x - 10x question 6 options: 7x -7x 13x -13x 7 (1 point) question 7 unsaved combine like terms. 8t - 9t + 4t - 12t question 7 options: -9t -7t 33t 17t 8 (1 point) question 8 unsaved simplify the expression by combining any like terms: x + 4x - 6y + 7y question 8 options: 5x - 13y 5x - y 6xy 5x + y 9 (1 point) question 9 unsaved simplify the expression by combining any like terms: 3ax + 3x + 5ax - x + 5a + 10ax question 9 options: 18ax + 4x + 5a 18ax + 2x + 5a 15a + 5ax 6a + 10ax 10 (1 point) question 10 unsaved simplify the expression by combining any like terms: 4m + 6mn - 2m - 2mn + 7m question 10 options: 9m + 4mn 13m + 4mn 9m + 8mn 9m - 4mn

QUESTION 5

The given expression is

All of these are like terms because all of them contain .

Let us combine the first two terms to obtain an expression which is

We finally simplify to obtain an expression which is

The correct answer is B

QUESTION 6

The given expression is

All the terms in the expression are like terms because they contain .

We combine the first three terms to obtain an expression which is

We finally simplify to obtain an equivalent expression which is

The correct answer is B

QUESTION 7

The given expression is

All the terms in the given expression are like terms because they all contain .

We combine the first two terms to obtain an equivalent expression which is

We again combine the first two terms to obtain an equivalent expression which is

We finally simplify to obtain an expression which is

The correct answer is A

QUESTION 8

The given expression is

The first two terms in the expression are like terms because they contain . The last two terms in the expression are also like terms because they contain .

When we combine the first two terms we obtain an equivalent expression which is

When we again combine the last two terms we obtain an equivalent expression which is

This final expression cannot be combined again because they are not like terms.

Therefore the correct answer is D

QUESTION 9

The given expression is

We group like terms to obtain,

We combine the first three terms to obtain,

We combine the middle two terms to obtain,

The correct answer is B

QUESTION 10

The given expression is

We group like terms to obtain an equivalent expression which is

We combine the first three terms to get,

We now combine the last two terms to get,

The correct answer is A

this is the formula: v = the value of investment at the end of the time period

p = the principal amount (the initial amount invested)

r = the annual interest rate

n = the annual frequency of compounding (how many times a year interest is added)

t = the number of years the money is invested

^ means raise to the power of