Writing Exponential Functions (Key Words)

The population of wild dingoes at the zoo is found to triple every year. You count 40 dingoes in the pen. Which function f(x) models the number of dingoes in the pen after x years?

• f(x)=40*3^x

• f(x)=40x*3

• f(x)=3x⁴⁰

• f(x)=40x³

The population of wild cheetahs at the zoo is found to triple every year. You count 35 cheetahs in the pen. Which function f(x) models the number of cheetahs in the pen after x years?

• f(x)=35*3^x

• f(x)=35*1.03^x

• f(x)=35*x³

• f(x)=3*x³⁵

The population of wild orangutans at the zoo is found to double every year. You count 45 orangutans in the pen. Which function f(x) would you use to find the number of years that it takes for the orangutan population to reach 400?

• 400=45*2^x

• x=400*45²

• 400=45*1.02^x

• 400*45*2*x

The population of wild bears at the zoo is found to double every year. You count 102 bears in the pen. Which function f(x) models the number of bears in the pen after x years?

• f(x)=102*2^x

• f(x)=102x²

• f(x)=102x*2

• f(x)=2x¹⁰²

In an exponential function, what does the 'a' represent?

• TIME

• RATE OF CHANGE

• STARTING AMOUNT

• MULTIPLIER

James' 70 in. giant peach doubles in size every week. Write an expression that would represent how big the peach is after 5 weeks.

• 70(2)³⁵
• 70(2)⁵
• 2(70)⁵
• 5(70)²

Tags

CCSS.6.EE.A.1

The expression 2400(2)^x represents the number of people that visit at an exhibit in year x.  The number of people that visit an exhibit________ (increases, decreases, stays the same) at the rate of ___________(double, triple, quadruple) each year.

• increases;double
• decreases;triple
• stays the same;double
• increases;triple

Tags

CCSS.HSF-IF.C.8B