Luis has saved $6. he doubles the amount he saves each week. does this represent an exponential function? complete:

represent an exponential function , because his savings increase by a

you so much in advanced

This represent an exponential function, because his savings increase by a constant factor of 2.

Step-by-step explanation:

It is given that,

Luis has saved $6 and he doubles the amount each week.

So, the amount saved in the next week = 6×2 = 12

This gives the amount saved in the third week = 12×2 = 24

So, we get the sequence 6, 12, 24, 48,.....

It can be written as, 6×2⁰, 6×2¹, 6×2², 6×2³,.....

So, the sequence in the exponential form , where 'n' is a natural number.

Also, 6, 12, 24, 48,.....

The numbers are increasing by the factor =

Hence, we get,

This represent an exponential function, because his savings increase by a constant factor of 2.

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt

191 students play sports and ninety-seven 10th graders were surveyed.

step-by-step explanation: