Evaluating Functions and Word Problems

Mr. Best guides students through various math problems, including calculating gas prices, solving linear equations, evaluating expressions, completing diamond problems, and using function machines. The video emphasizes problem-solving techniques and checking solutions for accuracy.

What is the main focus of Chapter One's homework questions?

• Graphing linear functions

• Evaluating expressions

• Understanding gas prices

• Solving quadratic equations

How much does it cost to buy 12 gallons of gas at $1.50 per gallon?

• $15.00

• $12.00

• $18.00

• $20.00

If Gerald paid $12.60 for gas at $1.50 per gallon, how many gallons did he buy?

• 10 gallons

• 9 gallons

• 8.4 gallons

• 7.5 gallons

How would the graph change if the gas price increased to $2.20 per gallon?

• The line would remain the same

• The line would become less steep

• The line would get steeper

• The line would curve

What is the solution to the equation -2x - 3 = 3?

• x = -3

• x = 3

• x = 6

• x = 0

In the equation 7 + 2x = 4x - 3, what is the value of x?

• x = 5

• x = 2

• x = 4

• x = 3

For the equation 6x - 10 = -8 + 3x, what is the solution for x?

• x = 2/3

• x = 3/2

• x = 1/2

• x = 1/3

Evaluate the expression -2x^2 + x + 1 for x = -3.

• 8

• 9

• -9

• -8

What is the result of 8 - (3x - 2)^2 for x = -2?

• 64

• -64

• 56

• -56

Calculate the expression -3/k + 2 for k = -3.

• 3

• -3

• 0

• 1