word problems

two frogs lived in a pond one came out and after one week one more frog joined now how many frogs are living in the pond

Is the pictured graph exponential growth, exponential decay, or linear or none?  

• Exponential Growth
• Exponential Decay
• Linear
• None of the above

Sally plans to walk 12 miles every week. Write an equation to represent this situation.

• y = 12x

• y = 12x + 12

• y = 10x + 2

• y = 2x + 10

What is the initial value?

• 0
• 3
• 33
• 66

If each mark on the x-axis represents one second, when did the object reach the ground?

• 2.5 seconds

• 6 seconds

• 5.5 seconds

• 5 seconds

_{What is the y-intercept of the line?}

• y = 1/2
• y = 1
• y = -1/2
• y = -1